diff options
Diffstat (limited to 'sunrpc/svc_auth.c')
| -rw-r--r-- | sunrpc/svc_auth.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/sunrpc/svc_auth.c b/sunrpc/svc_auth.c new file mode 100644 index 0000000000..f0aebd5358 --- /dev/null +++ b/sunrpc/svc_auth.c @@ -0,0 +1,119 @@ +/* @(#)svc_auth.c 2.4 88/08/15 4.0 RPCSRC */ +/* + * Sun RPC is a product of Sun Microsystems, Inc. and is provided for + * unrestricted use provided that this legend is included on all tape + * media and as a part of the software program in whole or part. Users + * may copy or modify Sun RPC without charge, but are not authorized + * to license or distribute it to anyone else except as part of a product or + * program developed by the user. + * + * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE + * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR + * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. + * + * Sun RPC is provided with no support and without any obligation on the + * part of Sun Microsystems, Inc. to assist in its use, correction, + * modification or enhancement. + * + * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE + * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC + * OR ANY PART THEREOF. + * + * In no event will Sun Microsystems, Inc. be liable for any lost revenue + * or profits or other special, indirect and consequential damages, even if + * Sun has been advised of the possibility of such damages. + * + * Sun Microsystems, Inc. + * 2550 Garcia Avenue + * Mountain View, California 94043 + */ +#if !defined(lint) && defined(SCCSIDS) +static char sccsid[] = "@(#)svc_auth.c 1.19 87/08/11 Copyr 1984 Sun Micro"; +#endif + +/* + * svc_auth.c, Server-side rpc authenticator interface. + * + * Copyright (C) 1984, Sun Microsystems, Inc. + */ + +#include <rpc/rpc.h> +#include <rpc/svc.h> +#include <rpc/svc_auth.h> + +/* + * svcauthsw is the bdevsw of server side authentication. + * + * Server side authenticators are called from authenticate by + * using the client auth struct flavor field to index into svcauthsw. + * The server auth flavors must implement a routine that looks + * like: + * + * enum auth_stat + * flavorx_auth(rqst, msg) + * register struct svc_req *rqst; + * register struct rpc_msg *msg; + * + */ + +static enum auth_stat _svcauth_null (struct svc_req *, struct rpc_msg *); + /* no authentication */ +extern enum auth_stat _svcauth_unix (struct svc_req *, struct rpc_msg *); + /* unix style (uid, gids) */ +extern enum auth_stat _svcauth_short (struct svc_req *, struct rpc_msg *); + /* short hand unix style */ +extern enum auth_stat _svcauth_des (struct svc_req *, struct rpc_msg *); + /* des style */ + +static const struct + { + enum auth_stat (*authenticator) (struct svc_req *, struct rpc_msg *); + } +svcauthsw[] = +{ + { _svcauth_null }, /* AUTH_NULL */ + { _svcauth_unix }, /* AUTH_UNIX */ + { _svcauth_short }, /* AUTH_SHORT */ + { _svcauth_des } /* AUTH_DES */ +}; +#define AUTH_MAX 3 /* HIGHEST AUTH NUMBER */ + + +/* + * The call rpc message, msg has been obtained from the wire. The msg contains + * the raw form of credentials and verifiers. authenticate returns AUTH_OK + * if the msg is successfully authenticated. If AUTH_OK then the routine also + * does the following things: + * set rqst->rq_xprt->verf to the appropriate response verifier; + * sets rqst->rq_client_cred to the "cooked" form of the credentials. + * + * NB: rqst->rq_cxprt->verf must be pre-allocated; + * its length is set appropriately. + * + * The caller still owns and is responsible for msg->u.cmb.cred and + * msg->u.cmb.verf. The authentication system retains ownership of + * rqst->rq_client_cred, the cooked credentials. + * + * There is an assumption that any flavour less than AUTH_NULL is + * invalid. + */ +enum auth_stat +_authenticate (register struct svc_req *rqst, struct rpc_msg *msg) +{ + register int cred_flavor; + + rqst->rq_cred = msg->rm_call.cb_cred; + rqst->rq_xprt->xp_verf.oa_flavor = _null_auth.oa_flavor; + rqst->rq_xprt->xp_verf.oa_length = 0; + cred_flavor = rqst->rq_cred.oa_flavor; + if ((cred_flavor <= AUTH_MAX) && (cred_flavor >= AUTH_NULL)) + return (*(svcauthsw[cred_flavor].authenticator)) (rqst, msg); + + return AUTH_REJECTEDCRED; +} + +static enum auth_stat +_svcauth_null (struct svc_req *rqst, struct rpc_msg *msg) +{ + return AUTH_OK; +} |