Moving Sun RPC code into libc, part 1. Based on work done by a number of

people, including J.T. Conklin, Theo de Raadt, Paul Richards, and probably
someone else who's going to flame me as soon as they see this message.

1 files changed, 117 insertions, 0 deletions

diff --git a/lib/libc/rpc/svc_auth.c b/lib/libc/rpc/svc_auth.c
new file mode 100644
index 0000000..0a9f276
--- /dev/null
+++ b/lib/libc/rpc/svc_auth.c
@@ -0,0 +1,117 @@
+/*
+ * 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(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)svc_auth.c 1.19 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)svc_auth.c	2.1 88/08/07 4.0 RPCSRC";*/
+static char *rcsid = "$Id: svc_auth.c,v 1.1 1993/10/27 05:40:56 paul Exp $";
+#endif
+
+/*
+ * svc_auth_nodes.c, Server-side rpc authenticator interface,
+ * *WITHOUT* DES authentication.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <rpc/rpc.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();		/* unix style (uid, gids) */
+enum auth_stat _svcauth_short();	/* short hand unix style */
+
+static struct {
+	enum auth_stat (*authenticator)();
+} svcauthsw[] = {
+	_svcauth_null,			/* AUTH_NULL */
+	_svcauth_unix,			/* AUTH_UNIX */
+	_svcauth_short,			/* AUTH_SHORT */
+};
+#define	AUTH_MAX	2		/* 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-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;
+
+	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);
+}
+
+enum auth_stat
+_svcauth_null(/*rqst, msg*/)
+	/*struct svc_req *rqst;
+	struct rpc_msg *msg;*/
+{
+
+	return (AUTH_OK);
+}