1261057Smav/*- 2261057Smav * Copyright (c) 2009, Sun Microsystems, Inc. 3261057Smav * All rights reserved. 48870Srgrimes * 5261057Smav * Redistribution and use in source and binary forms, with or without 6261057Smav * modification, are permitted provided that the following conditions are met: 7261057Smav * - Redistributions of source code must retain the above copyright notice, 8261057Smav * this list of conditions and the following disclaimer. 9261057Smav * - Redistributions in binary form must reproduce the above copyright notice, 10261057Smav * this list of conditions and the following disclaimer in the documentation 11261057Smav * and/or other materials provided with the distribution. 12261057Smav * - Neither the name of Sun Microsystems, Inc. nor the names of its 13261057Smav * contributors may be used to endorse or promote products derived 14261057Smav * from this software without specific prior written permission. 15261057Smav * 16261057Smav * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17261057Smav * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18261057Smav * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19261057Smav * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 20261057Smav * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21261057Smav * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22261057Smav * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23261057Smav * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24261057Smav * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25261057Smav * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26261057Smav * POSSIBILITY OF SUCH DAMAGE. 271901Swollman */ 281901Swollman 291901Swollman#if defined(LIBC_SCCS) && !defined(lint) 30136581Sobrienstatic char *sccsid2 = "@(#)svc_auth_unix.c 1.28 88/02/08 Copyr 1984 Sun Micro"; 3174462Salfredstatic char *sccsid = "@(#)svc_auth_unix.c 2.3 88/08/01 4.0 RPCSRC"; 321901Swollman#endif 3392990Sobrien#include <sys/cdefs.h> 3492990Sobrien__FBSDID("$FreeBSD$"); 351901Swollman 361901Swollman/* 371901Swollman * svc_auth_unix.c 381901Swollman * Handles UNIX flavor authentication parameters on the service side of rpc. 391901Swollman * There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT. 401901Swollman * _svcauth_unix does full blown unix style uid,gid+gids auth, 411901Swollman * _svcauth_short uses a shorthand auth to index into a cache of longhand auths. 421901Swollman * Note: the shorthand has been gutted for efficiency. 431901Swollman * 441901Swollman * Copyright (C) 1984, Sun Microsystems, Inc. 451901Swollman */ 461901Swollman 4774462Salfred#include "namespace.h" 4874462Salfred#include <assert.h> 491901Swollman#include <stdio.h> 5011666Sphk#include <string.h> 5174462Salfred 521901Swollman#include <rpc/rpc.h> 5374462Salfred#include "un-namespace.h" 541901Swollman 551901Swollman/* 561901Swollman * Unix longhand authenticator 571901Swollman */ 581901Swollmanenum auth_stat 591901Swollman_svcauth_unix(rqst, msg) 6074462Salfred struct svc_req *rqst; 6174462Salfred struct rpc_msg *msg; 621901Swollman{ 6374462Salfred enum auth_stat stat; 641901Swollman XDR xdrs; 6574462Salfred struct authunix_parms *aup; 6674462Salfred int32_t *buf; 671901Swollman struct area { 681901Swollman struct authunix_parms area_aup; 691901Swollman char area_machname[MAX_MACHINE_NAME+1]; 70241309Spfg u_int area_gids[NGRPS]; 711901Swollman } *area; 721901Swollman u_int auth_len; 7374462Salfred size_t str_len, gid_len; 7474462Salfred u_int i; 751901Swollman 7674462Salfred assert(rqst != NULL); 7774462Salfred assert(msg != NULL); 7874462Salfred 791901Swollman area = (struct area *) rqst->rq_clntcred; 801901Swollman aup = &area->area_aup; 811901Swollman aup->aup_machname = area->area_machname; 821901Swollman aup->aup_gids = area->area_gids; 831901Swollman auth_len = (u_int)msg->rm_call.cb_cred.oa_length; 841901Swollman xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,XDR_DECODE); 851901Swollman buf = XDR_INLINE(&xdrs, auth_len); 861901Swollman if (buf != NULL) { 8774462Salfred aup->aup_time = IXDR_GET_INT32(buf); 8874462Salfred str_len = (size_t)IXDR_GET_U_INT32(buf); 891901Swollman if (str_len > MAX_MACHINE_NAME) { 901901Swollman stat = AUTH_BADCRED; 911901Swollman goto done; 921901Swollman } 9374462Salfred memmove(aup->aup_machname, buf, str_len); 941901Swollman aup->aup_machname[str_len] = 0; 951901Swollman str_len = RNDUP(str_len); 9621088Speter buf += str_len / sizeof (int32_t); 9774462Salfred aup->aup_uid = (int)IXDR_GET_INT32(buf); 9874462Salfred aup->aup_gid = (int)IXDR_GET_INT32(buf); 9974462Salfred gid_len = (size_t)IXDR_GET_U_INT32(buf); 1001901Swollman if (gid_len > NGRPS) { 1011901Swollman stat = AUTH_BADCRED; 1021901Swollman goto done; 1031901Swollman } 1041901Swollman aup->aup_len = gid_len; 1051901Swollman for (i = 0; i < gid_len; i++) { 10674462Salfred aup->aup_gids[i] = (int)IXDR_GET_INT32(buf); 1071901Swollman } 1081901Swollman /* 1091901Swollman * five is the smallest unix credentials structure - 1101901Swollman * timestamp, hostname len (0), uid, gid, and gids len (0). 1111901Swollman */ 1121901Swollman if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len) { 11374462Salfred (void) printf("bad auth_len gid %ld str %ld auth %u\n", 11474462Salfred (long)gid_len, (long)str_len, auth_len); 1151901Swollman stat = AUTH_BADCRED; 1161901Swollman goto done; 1171901Swollman } 1181901Swollman } else if (! xdr_authunix_parms(&xdrs, aup)) { 1191901Swollman xdrs.x_op = XDR_FREE; 1201901Swollman (void)xdr_authunix_parms(&xdrs, aup); 1211901Swollman stat = AUTH_BADCRED; 1221901Swollman goto done; 1231901Swollman } 12426221Swpaul 12574462Salfred /* get the verifier */ 12626221Swpaul if ((u_int)msg->rm_call.cb_verf.oa_length) { 12774462Salfred rqst->rq_xprt->xp_verf.oa_flavor = 12826221Swpaul msg->rm_call.cb_verf.oa_flavor; 12974462Salfred rqst->rq_xprt->xp_verf.oa_base = 13026221Swpaul msg->rm_call.cb_verf.oa_base; 13174462Salfred rqst->rq_xprt->xp_verf.oa_length = 13226221Swpaul msg->rm_call.cb_verf.oa_length; 13326221Swpaul } else { 13426221Swpaul rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL; 13526221Swpaul rqst->rq_xprt->xp_verf.oa_length = 0; 13626221Swpaul } 1371901Swollman stat = AUTH_OK; 1381901Swollmandone: 1391901Swollman XDR_DESTROY(&xdrs); 1401901Swollman return (stat); 1411901Swollman} 1421901Swollman 1431901Swollman 1441901Swollman/* 1451901Swollman * Shorthand unix authenticator 1461901Swollman * Looks up longhand in a cache. 1471901Swollman */ 1481901Swollman/*ARGSUSED*/ 14974462Salfredenum auth_stat 1501901Swollman_svcauth_short(rqst, msg) 1511901Swollman struct svc_req *rqst; 1521901Swollman struct rpc_msg *msg; 1531901Swollman{ 1541901Swollman return (AUTH_REJECTEDCRED); 1551901Swollman} 156