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Diffstat (limited to 'libc/inet/rpc/svc_auth_unix.c')
-rw-r--r--libc/inet/rpc/svc_auth_unix.c134
1 files changed, 134 insertions, 0 deletions
diff --git a/libc/inet/rpc/svc_auth_unix.c b/libc/inet/rpc/svc_auth_unix.c
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+++ b/libc/inet/rpc/svc_auth_unix.c
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+/* @(#)svc_auth_unix.c 2.3 88/08/01 4.0 RPCSRC; from 1.28 88/02/08 SMI */
+/*
+ * 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_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.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <stdio.h>
+#include <rpc/rpc.h>
+
+/*
+ * Unix longhand authenticator
+ */
+enum auth_stat
+_svcauth_unix(rqst, msg)
+ register struct svc_req *rqst;
+ register struct rpc_msg *msg;
+{
+ register enum auth_stat stat;
+ XDR xdrs;
+ register struct authunix_parms *aup;
+ register long *buf;
+ struct area {
+ struct authunix_parms area_aup;
+ char area_machname[MAX_MACHINE_NAME+1];
+ int area_gids[NGRPS];
+ } *area;
+ u_int auth_len;
+ int str_len, gid_len;
+ register int i;
+
+ area = (struct area *) rqst->rq_clntcred;
+ aup = &area->area_aup;
+ aup->aup_machname = area->area_machname;
+ aup->aup_gids = area->area_gids;
+ auth_len = (u_int)msg->rm_call.cb_cred.oa_length;
+ xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,XDR_DECODE);
+ buf = XDR_INLINE(&xdrs, 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;
+ }
+ bcopy((caddr_t)buf, aup->aup_machname, (u_int)str_len);
+ aup->aup_machname[str_len] = 0;
+ str_len = RNDUP(str_len);
+ buf += str_len / sizeof (long);
+ 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 %d str %d auth %d\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
+_svcauth_short(rqst, msg)
+ struct svc_req *rqst;
+ struct rpc_msg *msg;
+{
+ return (AUTH_REJECTEDCRED);
+}