95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
#if !defined(lint) && defined(SCCSIDS)
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static char sccsid[] = "@(#)svc_auth.c 1.1 92/07/30 Copyr 1984 Sun Micro";
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#endif
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/*
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* svc_auth.c, Server-side rpc authenticator interface.
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*/
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#ifdef KERNEL
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#include <sys/param.h>
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#include <netinet/in.h>
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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#include <rpc/auth.h>
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#include <rpc/clnt.h>
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#include <rpc/rpc_msg.h>
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#include <rpc/svc.h>
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#include <rpc/svc_auth.h>
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#else
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#include <rpc/rpc.h>
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#endif
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/*
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* svcauthsw is the bdevsw of server side authentication.
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*
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* Server side authenticators are called from authenticate by
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* using the client auth struct flavor field to index into svcauthsw.
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* The server auth flavors must implement a routine that looks
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* like:
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*
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* enum auth_stat
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* flavorx_auth(rqst, msg)
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* register struct svc_req *rqst;
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* register struct rpc_msg *msg;
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*
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*/
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enum auth_stat _svcauth_null(); /* no authentication */
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enum auth_stat _svcauth_unix(); /* unix style (uid, gids) */
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enum auth_stat _svcauth_short(); /* short hand unix style */
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enum auth_stat _svcauth_des(); /* des style */
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/*
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* The call rpc message, msg has been obtained from the wire. The msg contains
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* the raw form of credentials and verifiers. authenticate returns AUTH_OK
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* if the msg is successfully authenticated. If AUTH_OK then the routine also
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* does the following things:
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* set rqst->rq_xprt->verf to the appropriate response verifier;
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* sets rqst->rq_client_cred to the "cooked" form of the credentials.
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*
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* NB: rqst->rq_cxprt->verf must be pre-alloctaed;
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* its length is set appropriately.
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*
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* The caller still owns and is responsible for msg->u.cmb.cred and
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* msg->u.cmb.verf. The authentication system retains ownership of
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* rqst->rq_client_cred, the cooked credentials.
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*
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* There is an assumption that any flavour less than AUTH_NULL is
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* invalid.
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*/
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enum auth_stat
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_authenticate(rqst, msg)
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register struct svc_req *rqst;
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struct rpc_msg *msg;
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{
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register int cred_flavor;
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rqst->rq_cred = msg->rm_call.cb_cred;
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rqst->rq_xprt->xp_verf.oa_flavor = _null_auth.oa_flavor;
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rqst->rq_xprt->xp_verf.oa_length = 0;
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cred_flavor = rqst->rq_cred.oa_flavor;
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switch (cred_flavor) {
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case AUTH_NULL:
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return (_svcauth_null(rqst, msg));
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case AUTH_UNIX:
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return (_svcauth_unix(rqst, msg));
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case AUTH_SHORT:
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return (_svcauth_short(rqst, msg));
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case AUTH_DES:
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return (_svcauth_des(rqst, msg));
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}
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return (AUTH_REJECTEDCRED);
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}
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/*ARGSUSED*/
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enum auth_stat
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_svcauth_null(rqst, msg)
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struct svc_req *rqst;
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struct rpc_msg *msg;
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{
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return (AUTH_OK);
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}
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