4.3BSD - /usr/src/new/sunrpc/svc_auth.c

   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: }

Defined functions

Defined variables

Defined macros