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