1 /* $NetBSD: svc_auth.c,v 1.10 1999/09/20 04:39:24 lukem 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 1.10 1999/09/20 04:39:24 lukem 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 <assert.h> 50 51 #include <rpc/rpc.h> 52 53 /* 54 * svcauthsw is the bdevsw of server side authentication. 55 * 56 * Server side authenticators are called from authenticate by 57 * using the client auth struct flavor field to index into svcauthsw. 58 * The server auth flavors must implement a routine that looks 59 * like: 60 * 61 * enum auth_stat 62 * flavorx_auth(rqst, msg) 63 * struct svc_req *rqst; 64 * struct rpc_msg *msg; 65 * 66 */ 67 68 static const struct { 69 enum auth_stat (*authenticator) __P((struct svc_req *, 70 struct rpc_msg *)); 71 } svcauthsw[] = { 72 { _svcauth_null }, /* AUTH_NULL */ 73 { _svcauth_unix }, /* AUTH_UNIX */ 74 { _svcauth_short } /* AUTH_SHORT */ 75 }; 76 #define AUTH_MAX 2 /* HIGHEST AUTH NUMBER */ 77 78 79 /* 80 * The call rpc message, msg has been obtained from the wire. The msg contains 81 * the raw form of credentials and verifiers. authenticate returns AUTH_OK 82 * if the msg is successfully authenticated. If AUTH_OK then the routine also 83 * does the following things: 84 * set rqst->rq_xprt->verf to the appropriate response verifier; 85 * sets rqst->rq_client_cred to the "cooked" form of the credentials. 86 * 87 * NB: rqst->rq_cxprt->verf must be pre-alloctaed; 88 * its length is set appropriately. 89 * 90 * The caller still owns and is responsible for msg->u.cmb.cred and 91 * msg->u.cmb.verf. The authentication system retains ownership of 92 * rqst->rq_client_cred, the cooked credentials. 93 * 94 * There is an assumption that any flavour less than AUTH_NULL is 95 * invalid. 96 */ 97 enum auth_stat 98 _authenticate(rqst, msg) 99 struct svc_req *rqst; 100 struct rpc_msg *msg; 101 { 102 int cred_flavor; 103 104 _DIAGASSERT(rqst != NULL); 105 _DIAGASSERT(msg != NULL); 106 107 rqst->rq_cred = msg->rm_call.cb_cred; 108 rqst->rq_xprt->xp_verf.oa_flavor = _null_auth.oa_flavor; 109 rqst->rq_xprt->xp_verf.oa_length = 0; 110 cred_flavor = rqst->rq_cred.oa_flavor; 111 if ((cred_flavor <= AUTH_MAX) && (cred_flavor >= AUTH_NULL)) { 112 return ((*(svcauthsw[cred_flavor].authenticator))(rqst, msg)); 113 } 114 115 return (AUTH_REJECTEDCRED); 116 } 117 118 /* ARGSUSED */ 119 enum auth_stat 120 _svcauth_null(rqst, msg) 121 struct svc_req *rqst; 122 struct rpc_msg *msg; 123 { 124 125 return (AUTH_OK); 126 } 127