vendor/krb5/1.15.1

1 files changed, 142 insertions, 0 deletions

diff --git a/src/lib/rpc/svc_auth_unix.c b/src/lib/rpc/svc_auth_unix.c
new file mode 100644
index 000000000000..a4b87d8ff469
--- /dev/null
+++ b/src/lib/rpc/svc_auth_unix.c
@@ -0,0 +1,142 @@
+/* @(#)svc_auth_unix.c	2.3 88/08/01 4.0 RPCSRC; from 1.28 88/02/08 SMI */
+/*
+ * Copyright (c) 2010, Oracle America, Inc.
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *
+ *     * Neither the name of the "Oracle America, Inc." nor the names of
+ *       its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#if !defined(lint) && defined(SCCSIDS)
+static char sccsid[] = "@(#)svc_auth_unix.c 1.28 88/02/08 Copyr 1984 Sun Micro";
+#endif
+
+/*
+ * svc_auth_unix.c
+ * Handles UNIX flavor authentication parameters on the service side of rpc.
+ * There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT.
+ * _svcauth_unix does full blown unix style uid,gid+gids auth,
+ * _svcauth_short uses a shorthand auth to index into a cache of longhand auths.
+ * Note: the shorthand has been gutted for efficiency.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <gssrpc/rpc.h>
+
+/*
+ * Unix longhand authenticator
+ */
+enum auth_stat
+gssrpc__svcauth_unix(
+	register struct svc_req *rqst,
+	register struct rpc_msg *msg,
+	bool_t *dispatch)
+{
+	register enum auth_stat stat;
+	XDR xdrs;
+	register struct authunix_parms *aup;
+	register rpc_inline_t *buf;
+	struct area {
+		struct authunix_parms area_aup;
+		char area_machname[MAX_MACHINE_NAME+1];
+		int area_gids[NGRPS];
+	} *area;
+	u_int auth_len, str_len, gid_len, i;
+
+	rqst->rq_xprt->xp_auth = &svc_auth_none;
+
+	area = (struct area *) rqst->rq_clntcred;
+	aup = &area->area_aup;
+	aup->aup_machname = area->area_machname;
+	aup->aup_gids = area->area_gids;
+	auth_len = msg->rm_call.cb_cred.oa_length;
+	if (auth_len > INT_MAX)
+		return AUTH_BADCRED;
+	xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,XDR_DECODE);
+	buf = XDR_INLINE(&xdrs, (int)auth_len);
+	if (buf != NULL) {
+		aup->aup_time = IXDR_GET_LONG(buf);
+		str_len = IXDR_GET_U_LONG(buf);
+		if (str_len > MAX_MACHINE_NAME) {
+			stat = AUTH_BADCRED;
+			goto done;
+		}
+		memmove(aup->aup_machname, buf, str_len);
+		aup->aup_machname[str_len] = 0;
+		str_len = RNDUP(str_len);
+		buf += str_len / BYTES_PER_XDR_UNIT;
+		aup->aup_uid = IXDR_GET_LONG(buf);
+		aup->aup_gid = IXDR_GET_LONG(buf);
+		gid_len = IXDR_GET_U_LONG(buf);
+		if (gid_len > NGRPS) {
+			stat = AUTH_BADCRED;
+			goto done;
+		}
+		aup->aup_len = gid_len;
+		for (i = 0; i < gid_len; i++) {
+			aup->aup_gids[i] = IXDR_GET_LONG(buf);
+		}
+		/*
+		 * five is the smallest unix credentials structure -
+		 * timestamp, hostname len (0), uid, gid, and gids len (0).
+		 */
+		if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len) {
+			(void) printf("bad auth_len gid %u str %u auth %u\n",
+			    gid_len, str_len, auth_len);
+			stat = AUTH_BADCRED;
+			goto done;
+		}
+	} else if (! xdr_authunix_parms(&xdrs, aup)) {
+		xdrs.x_op = XDR_FREE;
+		(void)xdr_authunix_parms(&xdrs, aup);
+		stat = AUTH_BADCRED;
+		goto done;
+	}
+	rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL;
+	rqst->rq_xprt->xp_verf.oa_length = 0;
+	stat = AUTH_OK;
+done:
+	XDR_DESTROY(&xdrs);
+	return (stat);
+}
+
+
+/*
+ * Shorthand unix authenticator
+ * Looks up longhand in a cache.
+ */
+/*ARGSUSED*/
+enum auth_stat
+gssrpc__svcauth_short(
+	struct svc_req *rqst,
+	struct rpc_msg *msg,
+	bool_t *dispatch)
+{
+	rqst->rq_xprt->xp_auth = &svc_auth_none;
+	return (AUTH_REJECTEDCRED);
+}