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Annotation of 43BSD/contrib/sunrpc/svc_auth.c, revision 1.1.1.1

1.1       root        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: #ifndef lint
                     30: static char sccsid[] = "@(#)svc_auth.c 1.4 85/03/17 Copyr 1984 Sun Micro";
                     31: #endif
                     32: 
                     33: /*
                     34:  * svc_auth.c, Server-side rpc authenticator interface.
                     35:  *
                     36:  * Copyright (C) 1984, Sun Microsystems, Inc.
                     37:  */
                     38: 
                     39: #include "types.h"
                     40: #include <netinet/in.h>
                     41: #include "xdr.h"
                     42: #include "auth.h"
                     43: #include "clnt.h"
                     44: #include "rpc_msg.h"
                     45: #include "svc.h"
                     46: #include "svc_auth.h"
                     47: 
                     48: /*
                     49:  * svcauthsw is the bdevsw of server side authentication. 
                     50:  * 
                     51:  * Server side authenticators are called from authenticate by
                     52:  * using the client auth struct flavor field to index into svcauthsw.
                     53:  * The server auth flavors must implement a routine that looks  
                     54:  * like: 
                     55:  * 
                     56:  *     enum auth_stat 
                     57:  *     flavorx_auth(rqst, msg)
                     58:  *             register struct svc_req *rqst; 
                     59:  *             register struct rpc_msg *msg;
                     60:  *  
                     61:  */
                     62: 
                     63: enum auth_stat _svcauth_null();                /* no authentication */
                     64: enum auth_stat _svcauth_unix();                /* unix style (uid, gids) */
                     65: enum auth_stat _svcauth_short();               /* short hand unix style */
                     66: 
                     67: static struct {
                     68:        enum auth_stat (*authenticator)();
                     69: } svcauthsw[] = {
                     70:        _svcauth_null,                  /* AUTH_NULL */
                     71:        _svcauth_unix,                  /* AUTH_UNIX */
                     72:        _svcauth_short                  /* AUTH_SHORT */
                     73: };
                     74: #define        AUTH_MAX        2               /* HIGHEST AUTH NUMBER */
                     75: 
                     76: 
                     77: /*
                     78:  * The call rpc message, msg has been obtained from the wire.  The msg contains
                     79:  * the raw form of credentials and verifiers.  authenticate returns AUTH_OK
                     80:  * if the msg is successfully authenticated.  If AUTH_OK then the routine also
                     81:  * does the following things:
                     82:  * set rqst->rq_xprt->verf to the appropriate response verifier;
                     83:  * sets rqst->rq_client_cred to the "cooked" form of the credentials.
                     84:  *
                     85:  * NB: rqst->rq_cxprt->verf must be pre-alloctaed;
                     86:  * its length is set appropriately.
                     87:  *
                     88:  * The caller still owns and is responsible for msg->u.cmb.cred and
                     89:  * msg->u.cmb.verf.  The authentication system retains ownership of
                     90:  * rqst->rq_client_cred, the cooked credentials.
                     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:        rqst->rq_clntcred = (caddr_t)AUTH_NULL;
                    103:        cred_flavor = rqst->rq_cred.oa_flavor;
                    104:        if (cred_flavor <= AUTH_MAX) {
                    105:                return ((*(svcauthsw[cred_flavor].authenticator))(rqst, msg));
                    106:        }
                    107: 
                    108:        return (AUTH_REJECTEDCRED);
                    109: }
                    110: 
                    111: enum auth_stat
                    112: _svcauth_null(/*rqst, msg*/)
                    113:        /*struct svc_req *rqst;
                    114:        struct rpc_msg *msg;*/
                    115: {
                    116: 
                    117:        return (AUTH_OK);
                    118: }

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