1 /* lib/rpc/svc_auth.c */ 2 /* 3 * Copyright (c) 2010, Oracle America, Inc. 4 * 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 18 * * Neither the name of the "Oracle America, Inc." nor the names of 19 * its contributors may be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 23 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 25 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 26 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 28 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 29 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 30 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* 36 * svc_auth_nodes.c, Server-side rpc authenticator interface, 37 * *WITHOUT* DES authentication. 38 */ 39 40 #include <gssrpc/rpc.h> 41 42 /* 43 * Server side authenticators are called from authenticate by 44 * using the client auth struct flavor field to index into svcauthsw. 45 * The server auth flavors must implement a routine that looks 46 * like: 47 * 48 * enum auth_stat 49 * flavorx_auth(rqst, msg) 50 * struct svc_req *rqst; 51 * struct rpc_msg *msg; 52 * 53 */ 54 55 static struct svcauthsw_type { 56 enum_t flavor; 57 enum auth_stat (*authenticator)(struct svc_req *, struct rpc_msg *, 58 bool_t *); 59 } svcauthsw[] = { 60 {AUTH_GSSAPI, gssrpc__svcauth_gssapi}, /* AUTH_GSSAPI */ 61 {AUTH_NONE, gssrpc__svcauth_none}, /* AUTH_NONE */ 62 {AUTH_UNIX, gssrpc__svcauth_unix}, /* AUTH_UNIX */ 63 {AUTH_SHORT, gssrpc__svcauth_short}, /* AUTH_SHORT */ 64 {RPCSEC_GSS, gssrpc__svcauth_gss} /* RPCSEC_GSS */ 65 }; 66 static int svcauthnum = sizeof(svcauthsw) / sizeof(struct svcauthsw_type); 67 68 /* 69 * The call rpc message, msg has been obtained from the wire. The msg contains 70 * the raw form of credentials and verifiers. authenticate returns AUTH_OK 71 * if the msg is successfully authenticated. If AUTH_OK then the routine also 72 * does the following things: 73 * set rqst->rq_xprt->verf to the appropriate response verifier; 74 * sets rqst->rq_client_cred to the "cooked" form of the credentials. 75 * 76 * NB: rqst->rq_cxprt->verf must be pre-alloctaed; 77 * its length is set appropriately. 78 * 79 * The caller still owns and is responsible for msg->u.cmb.cred and 80 * msg->u.cmb.verf. The authentication system retains ownership of 81 * rqst->rq_client_cred, the cooked credentials. 82 */ 83 enum auth_stat 84 gssrpc__authenticate( 85 struct svc_req *rqst, 86 struct rpc_msg *msg, 87 bool_t *no_dispatch) 88 { 89 int cred_flavor, i; 90 91 rqst->rq_cred = msg->rm_call.cb_cred; 92 rqst->rq_xprt->xp_verf.oa_flavor = gssrpc__null_auth.oa_flavor; 93 rqst->rq_xprt->xp_verf.oa_length = 0; 94 cred_flavor = rqst->rq_cred.oa_flavor; 95 *no_dispatch = FALSE; 96 for (i = 0; i < svcauthnum; i++) { 97 if (cred_flavor == svcauthsw[i].flavor && 98 svcauthsw[i].authenticator != NULL) { 99 return ((*(svcauthsw[i].authenticator))(rqst, 100 msg, 101 no_dispatch)); 102 } 103 } 104 105 return (AUTH_REJECTEDCRED); 106 } 107