1 /* $NetBSD: svc_auth.c,v 1.2 1995/02/25 03:01:57 cgd 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 #if defined(LIBC_SCCS) && !defined(lint) 33 /*static char *sccsid = "from: @(#)svc_auth.c 1.19 87/08/11 Copyr 1984 Sun Micro";*/ 34 /*static char *sccsid = "from: @(#)svc_auth.c 2.1 88/08/07 4.0 RPCSRC";*/ 35 static char *rcsid = "$NetBSD: svc_auth.c,v 1.2 1995/02/25 03:01:57 cgd Exp $"; 36 #endif 37 38 /* 39 * svc_auth_nodes.c, Server-side rpc authenticator interface, 40 * *WITHOUT* DES authentication. 41 * 42 * Copyright (C) 1984, Sun Microsystems, Inc. 43 */ 44 45 #include <rpc/rpc.h> 46 47 /* 48 * svcauthsw is the bdevsw of server side authentication. 49 * 50 * Server side authenticators are called from authenticate by 51 * using the client auth struct flavor field to index into svcauthsw. 52 * The server auth flavors must implement a routine that looks 53 * like: 54 * 55 * enum auth_stat 56 * flavorx_auth(rqst, msg) 57 * register struct svc_req *rqst; 58 * register struct rpc_msg *msg; 59 * 60 */ 61 62 enum auth_stat _svcauth_null(); /* no authentication */ 63 enum auth_stat _svcauth_unix(); /* unix style (uid, gids) */ 64 enum auth_stat _svcauth_short(); /* short hand unix style */ 65 66 static struct { 67 enum auth_stat (*authenticator)(); 68 } svcauthsw[] = { 69 _svcauth_null, /* AUTH_NULL */ 70 _svcauth_unix, /* AUTH_UNIX */ 71 _svcauth_short, /* AUTH_SHORT */ 72 }; 73 #define AUTH_MAX 2 /* HIGHEST AUTH NUMBER */ 74 75 76 /* 77 * The call rpc message, msg has been obtained from the wire. The msg contains 78 * the raw form of credentials and verifiers. authenticate returns AUTH_OK 79 * if the msg is successfully authenticated. If AUTH_OK then the routine also 80 * does the following things: 81 * set rqst->rq_xprt->verf to the appropriate response verifier; 82 * sets rqst->rq_client_cred to the "cooked" form of the credentials. 83 * 84 * NB: rqst->rq_cxprt->verf must be pre-alloctaed; 85 * its length is set appropriately. 86 * 87 * The caller still owns and is responsible for msg->u.cmb.cred and 88 * msg->u.cmb.verf. The authentication system retains ownership of 89 * rqst->rq_client_cred, the cooked credentials. 90 * 91 * There is an assumption that any flavour less than AUTH_NULL is 92 * invalid. 93 */ 94 enum auth_stat 95 _authenticate(rqst, msg) 96 register struct svc_req *rqst; 97 struct rpc_msg *msg; 98 { 99 register int cred_flavor; 100 101 rqst->rq_cred = msg->rm_call.cb_cred; 102 rqst->rq_xprt->xp_verf.oa_flavor = _null_auth.oa_flavor; 103 rqst->rq_xprt->xp_verf.oa_length = 0; 104 cred_flavor = rqst->rq_cred.oa_flavor; 105 if ((cred_flavor <= AUTH_MAX) && (cred_flavor >= AUTH_NULL)) { 106 return ((*(svcauthsw[cred_flavor].authenticator))(rqst, msg)); 107 } 108 109 return (AUTH_REJECTEDCRED); 110 } 111 112 enum auth_stat 113 _svcauth_null(/*rqst, msg*/) 114 /*struct svc_req *rqst; 115 struct rpc_msg *msg;*/ 116 { 117 118 return (AUTH_OK); 119 } 120