svc_vc.c revision 90316
174462Salfred/* $NetBSD: svc_vc.c,v 1.7 2000/08/03 00:01:53 fvdl Exp $ */ 274462Salfred/* $FreeBSD: head/lib/libc/rpc/svc_vc.c 90316 2002-02-06 19:14:02Z alfred $ */ 374462Salfred 474462Salfred/* 574462Salfred * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 674462Salfred * unrestricted use provided that this legend is included on all tape 774462Salfred * media and as a part of the software program in whole or part. Users 874462Salfred * may copy or modify Sun RPC without charge, but are not authorized 974462Salfred * to license or distribute it to anyone else except as part of a product or 1074462Salfred * program developed by the user. 1174462Salfred * 1274462Salfred * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 1374462Salfred * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 1474462Salfred * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 1574462Salfred * 1674462Salfred * Sun RPC is provided with no support and without any obligation on the 1774462Salfred * part of Sun Microsystems, Inc. to assist in its use, correction, 1874462Salfred * modification or enhancement. 1974462Salfred * 2074462Salfred * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 2174462Salfred * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 2274462Salfred * OR ANY PART THEREOF. 2374462Salfred * 2474462Salfred * In no event will Sun Microsystems, Inc. be liable for any lost revenue 2574462Salfred * or profits or other special, indirect and consequential damages, even if 2674462Salfred * Sun has been advised of the possibility of such damages. 2774462Salfred * 2874462Salfred * Sun Microsystems, Inc. 2974462Salfred * 2550 Garcia Avenue 3074462Salfred * Mountain View, California 94043 3174462Salfred */ 3274462Salfred 3374462Salfred#include <sys/cdefs.h> 3474462Salfred#if defined(LIBC_SCCS) && !defined(lint) 3574462Salfredstatic char *sccsid = "@(#)svc_tcp.c 1.21 87/08/11 Copyr 1984 Sun Micro"; 3674462Salfredstatic char *sccsid = "@(#)svc_tcp.c 2.2 88/08/01 4.0 RPCSRC"; 3774462Salfred#endif 3874462Salfred 3974462Salfred/* 4074462Salfred * svc_vc.c, Server side for Connection Oriented based RPC. 4174462Salfred * 4274462Salfred * Actually implements two flavors of transporter - 4374462Salfred * a tcp rendezvouser (a listner and connection establisher) 4474462Salfred * and a record/tcp stream. 4574462Salfred */ 4674462Salfred 4775094Siedowse#include "namespace.h" 4874462Salfred#include "reentrant.h" 4974462Salfred#include <sys/types.h> 5074462Salfred#include <sys/param.h> 5174462Salfred#include <sys/poll.h> 5274462Salfred#include <sys/socket.h> 5374462Salfred#include <sys/un.h> 5474462Salfred#include <sys/uio.h> 5574462Salfred#include <netinet/in.h> 5674462Salfred#include <netinet/tcp.h> 5774462Salfred 5874462Salfred#include <assert.h> 5974462Salfred#include <err.h> 6074462Salfred#include <errno.h> 6174462Salfred#include <stdio.h> 6274462Salfred#include <stdlib.h> 6374462Salfred#include <string.h> 6474462Salfred#include <unistd.h> 6574462Salfred 6674462Salfred#include <rpc/rpc.h> 6774462Salfred 6874462Salfred#include "rpc_com.h" 6974462Salfred#include "un-namespace.h" 7074462Salfred 7174660Salfredstruct cmessage { 7274660Salfred struct cmsghdr cmsg; 7374660Salfred struct cmsgcred cmcred; 7474660Salfred}; 7574462Salfred 7674462Salfredstatic SVCXPRT *makefd_xprt __P((int, u_int, u_int)); 7774462Salfredstatic bool_t rendezvous_request __P((SVCXPRT *, struct rpc_msg *)); 7874462Salfredstatic enum xprt_stat rendezvous_stat __P((SVCXPRT *)); 7974462Salfredstatic void svc_vc_destroy __P((SVCXPRT *)); 8074462Salfredstatic int read_vc __P((caddr_t, caddr_t, int)); 8174462Salfredstatic int write_vc __P((caddr_t, caddr_t, int)); 8274462Salfredstatic enum xprt_stat svc_vc_stat __P((SVCXPRT *)); 8374462Salfredstatic bool_t svc_vc_recv __P((SVCXPRT *, struct rpc_msg *)); 8474462Salfredstatic bool_t svc_vc_getargs __P((SVCXPRT *, xdrproc_t, caddr_t)); 8574462Salfredstatic bool_t svc_vc_freeargs __P((SVCXPRT *, xdrproc_t, caddr_t)); 8674462Salfredstatic bool_t svc_vc_reply __P((SVCXPRT *, struct rpc_msg *)); 8774462Salfredstatic void svc_vc_rendezvous_ops __P((SVCXPRT *)); 8874462Salfredstatic void svc_vc_ops __P((SVCXPRT *)); 8974462Salfredstatic bool_t svc_vc_control __P((SVCXPRT *xprt, const u_int rq, void *in)); 9074627Salfredstatic int __msgread_withcred(int, void *, size_t, struct cmessage *); 9174462Salfredstatic int __msgwrite(int, void *, size_t); 9274462Salfred 9374462Salfredstruct cf_rendezvous { /* kept in xprt->xp_p1 for rendezvouser */ 9474462Salfred u_int sendsize; 9574462Salfred u_int recvsize; 9674462Salfred}; 9774462Salfred 9874462Salfredstruct cf_conn { /* kept in xprt->xp_p1 for actual connection */ 9974462Salfred enum xprt_stat strm_stat; 10074462Salfred u_int32_t x_id; 10174462Salfred XDR xdrs; 10274462Salfred char verf_body[MAX_AUTH_BYTES]; 10374462Salfred}; 10474462Salfred 10574462Salfred/* 10674462Salfred * Usage: 10774462Salfred * xprt = svc_vc_create(sock, send_buf_size, recv_buf_size); 10874462Salfred * 10974462Salfred * Creates, registers, and returns a (rpc) tcp based transporter. 11074462Salfred * Once *xprt is initialized, it is registered as a transporter 11174462Salfred * see (svc.h, xprt_register). This routine returns 11274462Salfred * a NULL if a problem occurred. 11374462Salfred * 11474462Salfred * The filedescriptor passed in is expected to refer to a bound, but 11574462Salfred * not yet connected socket. 11674462Salfred * 11774462Salfred * Since streams do buffered io similar to stdio, the caller can specify 11874462Salfred * how big the send and receive buffers are via the second and third parms; 11974462Salfred * 0 => use the system default. 12074462Salfred */ 12174462SalfredSVCXPRT * 12274462Salfredsvc_vc_create(fd, sendsize, recvsize) 12374462Salfred int fd; 12474462Salfred u_int sendsize; 12574462Salfred u_int recvsize; 12674462Salfred{ 12774462Salfred SVCXPRT *xprt; 12874462Salfred struct cf_rendezvous *r = NULL; 12974462Salfred struct __rpc_sockinfo si; 13074462Salfred struct sockaddr_storage sslocal; 13174462Salfred socklen_t slen; 13274462Salfred 13374462Salfred r = mem_alloc(sizeof(*r)); 13474462Salfred if (r == NULL) { 13574462Salfred warnx("svc_vc_create: out of memory"); 13674462Salfred goto cleanup_svc_vc_create; 13774462Salfred } 13874462Salfred if (!__rpc_fd2sockinfo(fd, &si)) 13974462Salfred return NULL; 14074462Salfred r->sendsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsize); 14174462Salfred r->recvsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsize); 14274462Salfred xprt = mem_alloc(sizeof(SVCXPRT)); 14374462Salfred if (xprt == NULL) { 14474462Salfred warnx("svc_vc_create: out of memory"); 14574462Salfred goto cleanup_svc_vc_create; 14674462Salfred } 14774462Salfred xprt->xp_tp = NULL; 14874462Salfred xprt->xp_p1 = (caddr_t)(void *)r; 14974462Salfred xprt->xp_p2 = NULL; 15074462Salfred xprt->xp_p3 = NULL; 15174462Salfred xprt->xp_verf = _null_auth; 15274462Salfred svc_vc_rendezvous_ops(xprt); 15374462Salfred xprt->xp_port = (u_short)-1; /* It is the rendezvouser */ 15474462Salfred xprt->xp_fd = fd; 15574462Salfred 15674462Salfred slen = sizeof (struct sockaddr_storage); 15774462Salfred if (_getsockname(fd, (struct sockaddr *)(void *)&sslocal, &slen) < 0) { 15874462Salfred warnx("svc_vc_create: could not retrieve local addr"); 15974462Salfred goto cleanup_svc_vc_create; 16074462Salfred } 16174462Salfred 16274462Salfred xprt->xp_ltaddr.maxlen = xprt->xp_ltaddr.len = sslocal.ss_len; 16374462Salfred xprt->xp_ltaddr.buf = mem_alloc((size_t)sslocal.ss_len); 16474462Salfred if (xprt->xp_ltaddr.buf == NULL) { 16574462Salfred warnx("svc_vc_create: no mem for local addr"); 16674462Salfred goto cleanup_svc_vc_create; 16774462Salfred } 16874462Salfred memcpy(xprt->xp_ltaddr.buf, &sslocal, (size_t)sslocal.ss_len); 16974462Salfred 17074462Salfred xprt->xp_rtaddr.maxlen = sizeof (struct sockaddr_storage); 17174462Salfred xprt_register(xprt); 17274462Salfred return (xprt); 17374462Salfredcleanup_svc_vc_create: 17474462Salfred if (r != NULL) 17574462Salfred mem_free(r, sizeof(*r)); 17674462Salfred return (NULL); 17774462Salfred} 17874462Salfred 17974462Salfred/* 18074462Salfred * Like svtcp_create(), except the routine takes any *open* UNIX file 18174462Salfred * descriptor as its first input. 18274462Salfred */ 18374462SalfredSVCXPRT * 18474462Salfredsvc_fd_create(fd, sendsize, recvsize) 18574462Salfred int fd; 18674462Salfred u_int sendsize; 18774462Salfred u_int recvsize; 18874462Salfred{ 18974462Salfred struct sockaddr_storage ss; 19074462Salfred socklen_t slen; 19174462Salfred SVCXPRT *ret; 19274462Salfred 19374462Salfred assert(fd != -1); 19474462Salfred 19574462Salfred ret = makefd_xprt(fd, sendsize, recvsize); 19674462Salfred if (ret == NULL) 19774462Salfred return NULL; 19874462Salfred 19974462Salfred slen = sizeof (struct sockaddr_storage); 20074462Salfred if (_getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) { 20174462Salfred warnx("svc_fd_create: could not retrieve local addr"); 20274462Salfred goto freedata; 20374462Salfred } 20474462Salfred ret->xp_ltaddr.maxlen = ret->xp_ltaddr.len = ss.ss_len; 20574462Salfred ret->xp_ltaddr.buf = mem_alloc((size_t)ss.ss_len); 20674462Salfred if (ret->xp_ltaddr.buf == NULL) { 20774462Salfred warnx("svc_fd_create: no mem for local addr"); 20874462Salfred goto freedata; 20974462Salfred } 21074462Salfred memcpy(ret->xp_ltaddr.buf, &ss, (size_t)ss.ss_len); 21174462Salfred 21274462Salfred slen = sizeof (struct sockaddr_storage); 21374462Salfred if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) { 21474462Salfred warnx("svc_fd_create: could not retrieve remote addr"); 21574462Salfred goto freedata; 21674462Salfred } 21774462Salfred ret->xp_rtaddr.maxlen = ret->xp_rtaddr.len = ss.ss_len; 21874462Salfred ret->xp_rtaddr.buf = mem_alloc((size_t)ss.ss_len); 21974462Salfred if (ret->xp_rtaddr.buf == NULL) { 22074462Salfred warnx("svc_fd_create: no mem for local addr"); 22174462Salfred goto freedata; 22274462Salfred } 22374462Salfred memcpy(ret->xp_rtaddr.buf, &ss, (size_t)ss.ss_len); 22474462Salfred#ifdef PORTMAP 22590272Salfred if (ss.ss_family == AF_INET || ss.ss_family == AF_LOCAL) { 22674462Salfred ret->xp_raddr = *(struct sockaddr_in *)ret->xp_rtaddr.buf; 22774462Salfred ret->xp_addrlen = sizeof (struct sockaddr_in); 22874462Salfred } 22974462Salfred#endif /* PORTMAP */ 23074462Salfred 23174462Salfred return ret; 23274462Salfred 23374462Salfredfreedata: 23474462Salfred if (ret->xp_ltaddr.buf != NULL) 23574462Salfred mem_free(ret->xp_ltaddr.buf, rep->xp_ltaddr.maxlen); 23674462Salfred 23774462Salfred return NULL; 23874462Salfred} 23974462Salfred 24074462Salfredstatic SVCXPRT * 24174462Salfredmakefd_xprt(fd, sendsize, recvsize) 24274462Salfred int fd; 24374462Salfred u_int sendsize; 24474462Salfred u_int recvsize; 24574462Salfred{ 24674462Salfred SVCXPRT *xprt; 24774462Salfred struct cf_conn *cd; 24874462Salfred const char *netid; 24974462Salfred struct __rpc_sockinfo si; 25074462Salfred 25174462Salfred assert(fd != -1); 25274462Salfred 25374462Salfred xprt = mem_alloc(sizeof(SVCXPRT)); 25474462Salfred if (xprt == NULL) { 25574462Salfred warnx("svc_vc: makefd_xprt: out of memory"); 25674462Salfred goto done; 25774462Salfred } 25874462Salfred memset(xprt, 0, sizeof *xprt); 25974462Salfred cd = mem_alloc(sizeof(struct cf_conn)); 26074462Salfred if (cd == NULL) { 26174462Salfred warnx("svc_tcp: makefd_xprt: out of memory"); 26274462Salfred mem_free(xprt, sizeof(SVCXPRT)); 26374462Salfred xprt = NULL; 26474462Salfred goto done; 26574462Salfred } 26674462Salfred cd->strm_stat = XPRT_IDLE; 26774462Salfred xdrrec_create(&(cd->xdrs), sendsize, recvsize, 26874462Salfred (caddr_t)(void *)xprt, read_vc, write_vc); 26974462Salfred xprt->xp_p1 = (caddr_t)(void *)cd; 27074462Salfred xprt->xp_verf.oa_base = cd->verf_body; 27174462Salfred svc_vc_ops(xprt); /* truely deals with calls */ 27274462Salfred xprt->xp_port = 0; /* this is a connection, not a rendezvouser */ 27374462Salfred xprt->xp_fd = fd; 27474462Salfred if (__rpc_fd2sockinfo(fd, &si) && __rpc_sockinfo2netid(&si, &netid)) 27574462Salfred xprt->xp_netid = strdup(netid); 27674462Salfred 27774462Salfred xprt_register(xprt); 27874462Salfreddone: 27974462Salfred return (xprt); 28074462Salfred} 28174462Salfred 28274462Salfred/*ARGSUSED*/ 28374462Salfredstatic bool_t 28474462Salfredrendezvous_request(xprt, msg) 28574462Salfred SVCXPRT *xprt; 28674462Salfred struct rpc_msg *msg; 28774462Salfred{ 28874462Salfred int sock; 28974462Salfred struct cf_rendezvous *r; 29074462Salfred struct sockaddr_storage addr; 29174462Salfred socklen_t len; 29274462Salfred struct __rpc_sockinfo si; 29374462Salfred 29474462Salfred assert(xprt != NULL); 29574462Salfred assert(msg != NULL); 29674462Salfred 29774462Salfred r = (struct cf_rendezvous *)xprt->xp_p1; 29874462Salfredagain: 29974462Salfred len = sizeof addr; 30074462Salfred if ((sock = _accept(xprt->xp_fd, (struct sockaddr *)(void *)&addr, 30174462Salfred &len)) < 0) { 30274462Salfred if (errno == EINTR) 30374462Salfred goto again; 30474462Salfred return (FALSE); 30574462Salfred } 30674462Salfred /* 30774462Salfred * make a new transporter (re-uses xprt) 30874462Salfred */ 30974462Salfred xprt = makefd_xprt(sock, r->sendsize, r->recvsize); 31074462Salfred xprt->xp_rtaddr.buf = mem_alloc(len); 31174462Salfred if (xprt->xp_rtaddr.buf == NULL) 31274462Salfred return (FALSE); 31374462Salfred memcpy(xprt->xp_rtaddr.buf, &addr, len); 31474462Salfred xprt->xp_rtaddr.len = len; 31574462Salfred#ifdef PORTMAP 31690316Salfred if (addr.ss_family == AF_INET || addr.ss_family == AF_LOCAL) { 31774462Salfred xprt->xp_raddr = *(struct sockaddr_in *)xprt->xp_rtaddr.buf; 31874462Salfred xprt->xp_addrlen = sizeof (struct sockaddr_in); 31974462Salfred } 32074462Salfred#endif /* PORTMAP */ 32174462Salfred if (__rpc_fd2sockinfo(sock, &si) && si.si_proto == IPPROTO_TCP) { 32274462Salfred len = 1; 32374462Salfred /* XXX fvdl - is this useful? */ 32474462Salfred _setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, &len, sizeof (len)); 32574462Salfred } 32674462Salfred return (FALSE); /* there is never an rpc msg to be processed */ 32774462Salfred} 32874462Salfred 32974462Salfred/*ARGSUSED*/ 33074462Salfredstatic enum xprt_stat 33174462Salfredrendezvous_stat(xprt) 33274462Salfred SVCXPRT *xprt; 33374462Salfred{ 33474462Salfred 33574462Salfred return (XPRT_IDLE); 33674462Salfred} 33774462Salfred 33874462Salfredstatic void 33974462Salfredsvc_vc_destroy(xprt) 34074462Salfred SVCXPRT *xprt; 34174462Salfred{ 34274462Salfred struct cf_conn *cd; 34374462Salfred struct cf_rendezvous *r; 34474462Salfred 34574462Salfred assert(xprt != NULL); 34674462Salfred 34774462Salfred cd = (struct cf_conn *)xprt->xp_p1; 34874462Salfred 34974462Salfred xprt_unregister(xprt); 35074462Salfred if (xprt->xp_fd != RPC_ANYFD) 35174462Salfred (void)_close(xprt->xp_fd); 35274462Salfred if (xprt->xp_port != 0) { 35374462Salfred /* a rendezvouser socket */ 35474462Salfred r = (struct cf_rendezvous *)xprt->xp_p1; 35574462Salfred mem_free(r, sizeof (struct cf_rendezvous)); 35674462Salfred xprt->xp_port = 0; 35774462Salfred } else { 35874462Salfred /* an actual connection socket */ 35974462Salfred XDR_DESTROY(&(cd->xdrs)); 36074462Salfred mem_free(cd, sizeof(struct cf_conn)); 36174462Salfred } 36274462Salfred if (xprt->xp_rtaddr.buf) 36374462Salfred mem_free(xprt->xp_rtaddr.buf, xprt->xp_rtaddr.maxlen); 36474462Salfred if (xprt->xp_ltaddr.buf) 36574462Salfred mem_free(xprt->xp_ltaddr.buf, xprt->xp_ltaddr.maxlen); 36674462Salfred if (xprt->xp_tp) 36774462Salfred free(xprt->xp_tp); 36874462Salfred if (xprt->xp_netid) 36974462Salfred free(xprt->xp_netid); 37074462Salfred mem_free(xprt, sizeof(SVCXPRT)); 37174462Salfred} 37274462Salfred 37374462Salfred/*ARGSUSED*/ 37474462Salfredstatic bool_t 37574462Salfredsvc_vc_control(xprt, rq, in) 37674462Salfred SVCXPRT *xprt; 37774462Salfred const u_int rq; 37874462Salfred void *in; 37974462Salfred{ 38074462Salfred return (FALSE); 38174462Salfred} 38274462Salfred 38374462Salfred/* 38474462Salfred * reads data from the tcp or uip connection. 38574462Salfred * any error is fatal and the connection is closed. 38674462Salfred * (And a read of zero bytes is a half closed stream => error.) 38774462Salfred * All read operations timeout after 35 seconds. A timeout is 38874462Salfred * fatal for the connection. 38974462Salfred */ 39074462Salfredstatic int 39174462Salfredread_vc(xprtp, buf, len) 39274462Salfred caddr_t xprtp; 39374462Salfred caddr_t buf; 39474462Salfred int len; 39574462Salfred{ 39674462Salfred SVCXPRT *xprt; 39774462Salfred int sock; 39874462Salfred int milliseconds = 35 * 1000; 39974462Salfred struct pollfd pollfd; 40074462Salfred struct sockaddr *sa; 40174462Salfred struct cmessage *cm; 40274462Salfred 40374462Salfred xprt = (SVCXPRT *)(void *)xprtp; 40474462Salfred assert(xprt != NULL); 40574462Salfred 40674462Salfred sock = xprt->xp_fd; 40774462Salfred 40874536Salfred do { 40974536Salfred pollfd.fd = sock; 41074536Salfred pollfd.events = POLLIN; 41174462Salfred pollfd.revents = 0; 41274536Salfred switch (_poll(&pollfd, 1, milliseconds)) { 41374536Salfred case -1: 41474536Salfred if (errno == EINTR) 41574536Salfred continue; 41674536Salfred /*FALLTHROUGH*/ 41774627Salfred case 0: 41874627Salfred goto fatal_err; 41974627Salfred 42074627Salfred default: 42174627Salfred break; 42274536Salfred } 42374536Salfred } while ((pollfd.revents & POLLIN) == 0); 42474462Salfred 42590257Salfred cm = NULL; 42674462Salfred sa = (struct sockaddr *)xprt->xp_rtaddr.buf; 42774462Salfred if (sa->sa_family == AF_LOCAL) { 42874627Salfred cm = (struct cmessage *)xprt->xp_verf.oa_base; 42974627Salfred if ((len = __msgread_withcred(sock, buf, len, cm)) > 0) { 43084472Sdwmalone xprt->xp_p2 = &cm->cmcred; 43174462Salfred return (len); 43290257Salfred } else 43390257Salfred goto fatal_err; 43474462Salfred } else { 43574462Salfred if ((len = _read(sock, buf, (size_t)len)) > 0) 43674462Salfred return (len); 43774462Salfred } 43874462Salfred 43974462Salfredfatal_err: 44074462Salfred ((struct cf_conn *)(xprt->xp_p1))->strm_stat = XPRT_DIED; 44174462Salfred return (-1); 44274462Salfred} 44374462Salfred 44474462Salfred/* 44574462Salfred * writes data to the tcp connection. 44674462Salfred * Any error is fatal and the connection is closed. 44774462Salfred */ 44874462Salfredstatic int 44974462Salfredwrite_vc(xprtp, buf, len) 45074462Salfred caddr_t xprtp; 45174462Salfred caddr_t buf; 45274462Salfred int len; 45374462Salfred{ 45474462Salfred SVCXPRT *xprt; 45574462Salfred int i, cnt; 45674462Salfred struct sockaddr *sa; 45774462Salfred 45874462Salfred xprt = (SVCXPRT *)(void *)xprtp; 45974462Salfred assert(xprt != NULL); 46074462Salfred 46174462Salfred sa = (struct sockaddr *)xprt->xp_rtaddr.buf; 46274462Salfred if (sa->sa_family == AF_LOCAL) { 46374462Salfred for (cnt = len; cnt > 0; cnt -= i, buf += i) { 46474462Salfred if ((i = __msgwrite(xprt->xp_fd, buf, 46574462Salfred (size_t)cnt)) < 0) { 46674462Salfred ((struct cf_conn *)(xprt->xp_p1))->strm_stat = 46774462Salfred XPRT_DIED; 46874462Salfred return (-1); 46974462Salfred } 47074462Salfred } 47174462Salfred } else { 47274462Salfred for (cnt = len; cnt > 0; cnt -= i, buf += i) { 47374462Salfred if ((i = _write(xprt->xp_fd, buf, 47474462Salfred (size_t)cnt)) < 0) { 47574462Salfred ((struct cf_conn *)(xprt->xp_p1))->strm_stat = 47674462Salfred XPRT_DIED; 47774462Salfred return (-1); 47874462Salfred } 47974462Salfred } 48074462Salfred } 48174462Salfred 48274462Salfred return (len); 48374462Salfred} 48474462Salfred 48574462Salfredstatic enum xprt_stat 48674462Salfredsvc_vc_stat(xprt) 48774462Salfred SVCXPRT *xprt; 48874462Salfred{ 48974462Salfred struct cf_conn *cd; 49074462Salfred 49174462Salfred assert(xprt != NULL); 49274462Salfred 49374462Salfred cd = (struct cf_conn *)(xprt->xp_p1); 49474462Salfred 49574462Salfred if (cd->strm_stat == XPRT_DIED) 49674462Salfred return (XPRT_DIED); 49774462Salfred if (! xdrrec_eof(&(cd->xdrs))) 49874462Salfred return (XPRT_MOREREQS); 49974462Salfred return (XPRT_IDLE); 50074462Salfred} 50174462Salfred 50274462Salfredstatic bool_t 50374462Salfredsvc_vc_recv(xprt, msg) 50474462Salfred SVCXPRT *xprt; 50574462Salfred struct rpc_msg *msg; 50674462Salfred{ 50774462Salfred struct cf_conn *cd; 50874462Salfred XDR *xdrs; 50974462Salfred 51074462Salfred assert(xprt != NULL); 51174462Salfred assert(msg != NULL); 51274462Salfred 51374462Salfred cd = (struct cf_conn *)(xprt->xp_p1); 51474462Salfred xdrs = &(cd->xdrs); 51574462Salfred 51674462Salfred xdrs->x_op = XDR_DECODE; 51774462Salfred (void)xdrrec_skiprecord(xdrs); 51874462Salfred if (xdr_callmsg(xdrs, msg)) { 51974462Salfred cd->x_id = msg->rm_xid; 52074462Salfred return (TRUE); 52174462Salfred } 52274462Salfred cd->strm_stat = XPRT_DIED; 52374462Salfred return (FALSE); 52474462Salfred} 52574462Salfred 52674462Salfredstatic bool_t 52774462Salfredsvc_vc_getargs(xprt, xdr_args, args_ptr) 52874462Salfred SVCXPRT *xprt; 52974462Salfred xdrproc_t xdr_args; 53074462Salfred caddr_t args_ptr; 53174462Salfred{ 53274462Salfred 53374462Salfred assert(xprt != NULL); 53474462Salfred /* args_ptr may be NULL */ 53574462Salfred return ((*xdr_args)(&(((struct cf_conn *)(xprt->xp_p1))->xdrs), 53674462Salfred args_ptr)); 53774462Salfred} 53874462Salfred 53974462Salfredstatic bool_t 54074462Salfredsvc_vc_freeargs(xprt, xdr_args, args_ptr) 54174462Salfred SVCXPRT *xprt; 54274462Salfred xdrproc_t xdr_args; 54374462Salfred caddr_t args_ptr; 54474462Salfred{ 54574462Salfred XDR *xdrs; 54674462Salfred 54774462Salfred assert(xprt != NULL); 54874462Salfred /* args_ptr may be NULL */ 54974462Salfred 55074462Salfred xdrs = &(((struct cf_conn *)(xprt->xp_p1))->xdrs); 55174462Salfred 55274462Salfred xdrs->x_op = XDR_FREE; 55374462Salfred return ((*xdr_args)(xdrs, args_ptr)); 55474462Salfred} 55574462Salfred 55674462Salfredstatic bool_t 55774462Salfredsvc_vc_reply(xprt, msg) 55874462Salfred SVCXPRT *xprt; 55974462Salfred struct rpc_msg *msg; 56074462Salfred{ 56174462Salfred struct cf_conn *cd; 56274462Salfred XDR *xdrs; 56374462Salfred bool_t stat; 56474462Salfred 56574462Salfred assert(xprt != NULL); 56674462Salfred assert(msg != NULL); 56774462Salfred 56874462Salfred cd = (struct cf_conn *)(xprt->xp_p1); 56974462Salfred xdrs = &(cd->xdrs); 57074462Salfred 57174462Salfred xdrs->x_op = XDR_ENCODE; 57274462Salfred msg->rm_xid = cd->x_id; 57374462Salfred stat = xdr_replymsg(xdrs, msg); 57474462Salfred (void)xdrrec_endofrecord(xdrs, TRUE); 57574462Salfred return (stat); 57674462Salfred} 57774462Salfred 57874462Salfredstatic void 57974462Salfredsvc_vc_ops(xprt) 58074462Salfred SVCXPRT *xprt; 58174462Salfred{ 58274462Salfred static struct xp_ops ops; 58374462Salfred static struct xp_ops2 ops2; 58474462Salfred extern mutex_t ops_lock; 58574462Salfred 58674462Salfred/* VARIABLES PROTECTED BY ops_lock: ops, ops2 */ 58774462Salfred 58874462Salfred mutex_lock(&ops_lock); 58974462Salfred if (ops.xp_recv == NULL) { 59074462Salfred ops.xp_recv = svc_vc_recv; 59174462Salfred ops.xp_stat = svc_vc_stat; 59274462Salfred ops.xp_getargs = svc_vc_getargs; 59374462Salfred ops.xp_reply = svc_vc_reply; 59474462Salfred ops.xp_freeargs = svc_vc_freeargs; 59574462Salfred ops.xp_destroy = svc_vc_destroy; 59674462Salfred ops2.xp_control = svc_vc_control; 59774462Salfred } 59874462Salfred xprt->xp_ops = &ops; 59974462Salfred xprt->xp_ops2 = &ops2; 60074462Salfred mutex_unlock(&ops_lock); 60174462Salfred} 60274462Salfred 60374462Salfredstatic void 60474462Salfredsvc_vc_rendezvous_ops(xprt) 60574462Salfred SVCXPRT *xprt; 60674462Salfred{ 60774462Salfred static struct xp_ops ops; 60874462Salfred static struct xp_ops2 ops2; 60974462Salfred extern mutex_t ops_lock; 61074462Salfred 61174462Salfred mutex_lock(&ops_lock); 61274462Salfred if (ops.xp_recv == NULL) { 61374462Salfred ops.xp_recv = rendezvous_request; 61474462Salfred ops.xp_stat = rendezvous_stat; 61574462Salfred ops.xp_getargs = 61674462Salfred (bool_t (*) __P((SVCXPRT *, xdrproc_t, caddr_t)))abort; 61774462Salfred ops.xp_reply = 61874462Salfred (bool_t (*) __P((SVCXPRT *, struct rpc_msg *)))abort; 61974462Salfred ops.xp_freeargs = 62074462Salfred (bool_t (*) __P((SVCXPRT *, xdrproc_t, caddr_t)))abort, 62174462Salfred ops.xp_destroy = svc_vc_destroy; 62274462Salfred ops2.xp_control = svc_vc_control; 62374462Salfred } 62474462Salfred xprt->xp_ops = &ops; 62574462Salfred xprt->xp_ops2 = &ops2; 62674462Salfred mutex_unlock(&ops_lock); 62774462Salfred} 62874462Salfred 62974627Salfredint 63074627Salfred__msgread_withcred(sock, buf, cnt, cmp) 63174462Salfred int sock; 63274462Salfred void *buf; 63374462Salfred size_t cnt; 63474627Salfred struct cmessage *cmp; 63574462Salfred{ 63674462Salfred struct iovec iov[1]; 63774462Salfred struct msghdr msg; 63884472Sdwmalone union { 63984472Sdwmalone struct cmsghdr cmsg; 64084472Sdwmalone char control[CMSG_SPACE(sizeof(struct cmsgcred))]; 64184472Sdwmalone } cm; 64284472Sdwmalone int ret; 64384472Sdwmalone 64474462Salfred 64584472Sdwmalone bzero(&cm, sizeof(cm)); 64674462Salfred iov[0].iov_base = buf; 64774462Salfred iov[0].iov_len = cnt; 64874462Salfred 64974462Salfred msg.msg_iov = iov; 65074462Salfred msg.msg_iovlen = 1; 65174462Salfred msg.msg_name = NULL; 65274462Salfred msg.msg_namelen = 0; 65384472Sdwmalone msg.msg_control = &cm; 65484472Sdwmalone msg.msg_controllen = CMSG_SPACE(sizeof(struct cmsgcred)); 65574462Salfred msg.msg_flags = 0; 65674462Salfred 65784472Sdwmalone ret = _recvmsg(sock, &msg, 0); 65884472Sdwmalone bcopy(&cm.cmsg, &cmp->cmsg, sizeof(cmp->cmsg)); 65984472Sdwmalone bcopy(CMSG_DATA(&cm), &cmp->cmcred, sizeof(cmp->cmcred)); 66090257Salfred 66190257Salfred if (msg.msg_controllen == 0 || 66290257Salfred (msg.msg_flags & MSG_CTRUNC) != 0) 66390257Salfred return (-1); 66490257Salfred 66590257Salfred return (ret); 66674462Salfred} 66774627Salfred 66874462Salfredstatic int 66974462Salfred__msgwrite(sock, buf, cnt) 67074462Salfred int sock; 67174462Salfred void *buf; 67274462Salfred size_t cnt; 67374462Salfred{ 67474462Salfred struct iovec iov[1]; 67574462Salfred struct msghdr msg; 67674462Salfred struct cmessage cm; 67774462Salfred 67874462Salfred bzero((char *)&cm, sizeof(cm)); 67974462Salfred iov[0].iov_base = buf; 68074462Salfred iov[0].iov_len = cnt; 68174462Salfred 68274462Salfred cm.cmsg.cmsg_type = SCM_CREDS; 68374462Salfred cm.cmsg.cmsg_level = SOL_SOCKET; 68474462Salfred cm.cmsg.cmsg_len = sizeof(struct cmessage); 68574462Salfred 68674462Salfred msg.msg_iov = iov; 68774462Salfred msg.msg_iovlen = 1; 68874462Salfred msg.msg_name = NULL; 68974462Salfred msg.msg_namelen = 0; 69074462Salfred msg.msg_control = (caddr_t)&cm; 69174462Salfred msg.msg_controllen = sizeof(struct cmessage); 69274462Salfred msg.msg_flags = 0; 69374462Salfred 69474462Salfred return(_sendmsg(sock, &msg, 0)); 69574462Salfred} 69674627Salfred 69774627Salfred/* 69874627Salfred * Get the effective UID of the sending process. Used by rpcbind and keyserv 69974627Salfred * (AF_LOCAL). 70074627Salfred */ 70174627Salfredint 70274627Salfred__rpc_get_local_uid(SVCXPRT *transp, uid_t *uid) 70374627Salfred{ 70474627Salfred struct cmsgcred *cmcred; 70590257Salfred struct cmessage *cm; 70690257Salfred struct cmsghdr *cmp; 70790257Salfred 70890257Salfred cm = (struct cmessage *)transp->xp_verf.oa_base; 70990257Salfred 71090257Salfred if (cm == NULL) 71190257Salfred return (-1); 71290257Salfred cmp = &cm->cmsg; 71390257Salfred if (cmp == NULL || cmp->cmsg_level != SOL_SOCKET || 71490257Salfred cmp->cmsg_type != SCM_CREDS) 71590257Salfred return (-1); 71674627Salfred 71774627Salfred cmcred = __svc_getcallercreds(transp); 71874627Salfred if (cmcred == NULL) 71990258Salfred return (-1); 72074627Salfred *uid = cmcred->cmcred_euid; 72190258Salfred return (0); 72274627Salfred} 723