| 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: svc_auth.c,v 1.3 1993/08/26 00:53:38 jtc Exp $"; |
| 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 | } |