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-rw-r--r--c/src/exec/librpc/src/rpc/svc_auth.c216
1 files changed, 216 insertions, 0 deletions
diff --git a/c/src/exec/librpc/src/rpc/svc_auth.c b/c/src/exec/librpc/src/rpc/svc_auth.c
index e69de29bb2..f95f101f33 100644
--- a/c/src/exec/librpc/src/rpc/svc_auth.c
+++ b/c/src/exec/librpc/src/rpc/svc_auth.c
@@ -0,0 +1,216 @@
+/*
+ * 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
+ */
+/*
+ * Copyright (c) 1986-1991 by Sun Microsystems Inc.
+ */
+
+#ident "@(#)svc_auth.c 1.16 94/04/24 SMI"
+
+#if !defined(lint) && defined(SCCSIDS)
+#if 0
+static char sccsid[] = "@(#)svc_auth.c 1.26 89/02/07 Copyr 1984 Sun Micro";
+#else
+static const char rcsid[] =
+ "$FreeBSD: src/lib/libc/rpc/svc_auth.c,v 1.7 1999/12/29 05:04:16 peter Exp $";
+#endif
+#endif
+
+/*
+ * svc_auth.c, Server-side rpc authenticator interface.
+ *
+ */
+
+#ifdef _KERNEL
+#include <sys/param.h>
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+#include <rpc/auth.h>
+#include <rpc/clnt.h>
+#include <rpc/rpc_msg.h>
+#include <rpc/svc.h>
+#include <rpc/svc_auth.h>
+#else
+#include <stdlib.h>
+#include <rpc/rpc.h>
+#endif
+#include <sys/types.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;
+ *
+ */
+
+enum auth_stat _svcauth_null(); /* no authentication */
+enum auth_stat _svcauth_unix(); /* (system) unix style (uid, gids) */
+enum auth_stat _svcauth_short(); /* short hand unix style */
+enum auth_stat _svcauth_des(); /* des style */
+
+/* declarations to allow servers to specify new authentication flavors */
+struct authsvc {
+ int flavor;
+ enum auth_stat (*handler)();
+ struct authsvc *next;
+};
+#define Auths ((struct authsvc *)((struct rtems_rpc_task_variables *)rtems_rpc_task_variables)->svc_auths_Auths)
+
+/*
+ * 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-alloctaed;
+ * 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(rqst, msg)
+ register struct svc_req *rqst;
+ struct rpc_msg *msg;
+{
+ register int cred_flavor;
+ register struct authsvc *asp;
+
+ 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;
+ switch (cred_flavor) {
+ case AUTH_NULL:
+ return(_svcauth_null(rqst, msg));
+ case AUTH_UNIX:
+ return(_svcauth_unix(rqst, msg));
+ case AUTH_SHORT:
+ return(_svcauth_short(rqst, msg));
+ /*
+ * We leave AUTH_DES turned off by default because svcauth_des()
+ * needs getpublickey(), which is in librpcsvc, not libc. If we
+ * included AUTH_DES as a built-in flavor, programs that don't
+ * have -lrpcsvc in their Makefiles wouldn't link correctly, even
+ * though they don't use AUTH_DES. And I'm too lazy to go through
+ * the tree looking for all of them.
+ */
+#ifdef DES_BUILTIN
+ case AUTH_DES:
+ return(_svcauth_des(rqst, msg));
+#endif
+ }
+
+ /* flavor doesn't match any of the builtin types, so try new ones */
+ for (asp = Auths; asp; asp = asp->next) {
+ if (asp->flavor == cred_flavor) {
+ enum auth_stat as;
+
+ as = (*asp->handler)(rqst, msg);
+ return (as);
+ }
+ }
+
+ return (AUTH_REJECTEDCRED);
+}
+
+/*ARGSUSED*/
+enum auth_stat
+_svcauth_null(rqst, msg)
+ struct svc_req *rqst;
+ struct rpc_msg *msg;
+{
+ return (AUTH_OK);
+}
+
+/*
+ * Allow the rpc service to register new authentication types that it is
+ * prepared to handle. When an authentication flavor is registered,
+ * the flavor is checked against already registered values. If not
+ * registered, then a new Auths entry is added on the list.
+ *
+ * There is no provision to delete a registration once registered.
+ *
+ * This routine returns:
+ * 0 if registration successful
+ * 1 if flavor already registered
+ * -1 if can't register (errno set)
+ */
+
+int
+svc_auth_reg(cred_flavor, handler)
+ register int cred_flavor;
+ enum auth_stat (*handler)();
+{
+ register struct authsvc *asp;
+
+ switch (cred_flavor) {
+ case AUTH_NULL:
+ case AUTH_UNIX:
+ case AUTH_SHORT:
+#ifdef DES_BUILTIN
+ case AUTH_DES:
+#endif
+ /* already registered */
+ return (1);
+
+ default:
+ for (asp = Auths; asp; asp = asp->next) {
+ if (asp->flavor == cred_flavor) {
+ /* already registered */
+ return (1);
+ }
+ }
+
+ /* this is a new one, so go ahead and register it */
+ asp = (struct authsvc *)mem_alloc(sizeof (*asp));
+ if (asp == NULL) {
+ return (-1);
+ }
+ asp->flavor = cred_flavor;
+ asp->handler = handler;
+ asp->next = Auths;
+ Auths = asp;
+ break;
+ }
+ return (0);
+}