1 /* $NetBSD: svc_auth.c,v 1.3 1997/07/13 20:13:21 christos Exp $ */ 2 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 32 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 #if 0 35 static char *sccsid = "@(#)svc_auth.c 1.19 87/08/11 Copyr 1984 Sun Micro"; 36 static char *sccsid = "@(#)svc_auth.c 2.1 88/08/07 4.0 RPCSRC"; 37 #else 38 __RCSID("$NetBSD: svc_auth.c,v 1.3 1997/07/13 20:13:21 christos Exp $"); 39 #endif 40 #endif 41 42 /* 43 * svc_auth_nodes.c, Server-side rpc authenticator interface, 44 * *WITHOUT* DES authentication. 45 * 46 * Copyright (C) 1984, Sun Microsystems, Inc. 47 */ 48 49 #include <rpc/rpc.h> 50 51 /* 52 * svcauthsw is the bdevsw of server side authentication. 53 * 54 * Server side authenticators are called from authenticate by 55 * using the client auth struct flavor field to index into svcauthsw. 56 * The server auth flavors must implement a routine that looks 57 * like: 58 * 59 * enum auth_stat 60 * flavorx_auth(rqst, msg) 61 * register struct svc_req *rqst; 62 * register struct rpc_msg *msg; 63 * 64 */ 65 66 static struct { 67 enum auth_stat (*authenticator) __P((struct svc_req *, 68 struct rpc_msg *)); 69 } svcauthsw[] = { 70 { _svcauth_null }, /* AUTH_NULL */ 71 { _svcauth_unix }, /* AUTH_UNIX */ 72 { _svcauth_short } /* AUTH_SHORT */ 73 }; 74 #define AUTH_MAX 2 /* HIGHEST AUTH NUMBER */ 75 76 77 /* 78 * The call rpc message, msg has been obtained from the wire. The msg contains 79 * the raw form of credentials and verifiers. authenticate returns AUTH_OK 80 * if the msg is successfully authenticated. If AUTH_OK then the routine also 81 * does the following things: 82 * set rqst->rq_xprt->verf to the appropriate response verifier; 83 * sets rqst->rq_client_cred to the "cooked" form of the credentials. 84 * 85 * NB: rqst->rq_cxprt->verf must be pre-alloctaed; 86 * its length is set appropriately. 87 * 88 * The caller still owns and is responsible for msg->u.cmb.cred and 89 * msg->u.cmb.verf. The authentication system retains ownership of 90 * rqst->rq_client_cred, the cooked credentials. 91 * 92 * There is an assumption that any flavour less than AUTH_NULL is 93 * invalid. 94 */ 95 enum auth_stat 96 _authenticate(rqst, msg) 97 register struct svc_req *rqst; 98 struct rpc_msg *msg; 99 { 100 register int cred_flavor; 101 102 rqst->rq_cred = msg->rm_call.cb_cred; 103 rqst->rq_xprt->xp_verf.oa_flavor = _null_auth.oa_flavor; 104 rqst->rq_xprt->xp_verf.oa_length = 0; 105 cred_flavor = rqst->rq_cred.oa_flavor; 106 if ((cred_flavor <= AUTH_MAX) && (cred_flavor >= AUTH_NULL)) { 107 return ((*(svcauthsw[cred_flavor].authenticator))(rqst, msg)); 108 } 109 110 return (AUTH_REJECTEDCRED); 111 } 112 113 enum auth_stat 114 _svcauth_null(rqst, msg) 115 struct svc_req *rqst; 116 struct rpc_msg *msg; 117 { 118 119 return (AUTH_OK); 120 } 121