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