1 files changed, 119 insertions, 0 deletions
diff --git a/sunrpc/svc_auth.c b/sunrpc/svc_auth.c
new file mode 100644
index 0000000..f0aebd5
--- /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;
+}