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/* $OpenBSD: svc_auth.c,v 1.10 2016/09/23 02:53:46 guenther Exp $ */ |
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/* |
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* Copyright (c) 2010, Oracle America, Inc. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* * Neither the name of the "Oracle America, Inc." nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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/* |
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* svc_auth_nodes.c, Server-side rpc authenticator interface, |
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* *WITHOUT* DES authentication. |
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*/ |
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#include <rpc/rpc.h> |
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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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* struct svc_req *rqst; |
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* struct rpc_msg *msg; |
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* |
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*/ |
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/* no authentication */ |
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enum auth_stat _svcauth_null(void); |
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PROTO_NORMAL(_svcauth_null); |
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static struct { |
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enum auth_stat (*authenticator)(); |
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} svcauthsw[] = { |
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{ _svcauth_null }, /* AUTH_NULL */ |
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{ _svcauth_unix }, /* AUTH_UNIX */ |
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{ _svcauth_short } /* AUTH_SHORT */ |
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}; |
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#define AUTH_MAX 2 /* HIGHEST AUTH NUMBER */ |
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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-allocated; |
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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(struct svc_req *rqst, struct rpc_msg *msg) |
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{ |
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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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if ((cred_flavor <= AUTH_MAX) && (cred_flavor >= AUTH_NULL)) { |
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return ((*(svcauthsw[cred_flavor].authenticator))(rqst, msg)); |
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} |
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return (AUTH_REJECTEDCRED); |
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} |
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enum auth_stat |
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_svcauth_null(void) |
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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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DEF_STRONG(_svcauth_null); |