156 lines
3.9 KiB
C
156 lines
3.9 KiB
C
static char sccsid[] = "@(#)20 1.1 src/bos/usr/ccs/lib/libc/svc_auth_unix.c, libcrpc, bos411, 9428A410j 10/25/93 20:54:16";
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/*
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* COMPONENT_NAME: LIBCRPC
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*
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* FUNCTIONS: _svcauth_short
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* _svcauth_unix
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*
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*
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* ORIGINS: 24,27
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*
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* This module contains IBM CONFIDENTIAL code. -- (IBM
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* Confidential Restricted when combined with the aggregated
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* modules for this product)
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* SOURCE MATERIALS
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*
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* (C) COPYRIGHT International Business Machines Corp. 1989,1993
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* All Rights Reserved
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* US Government Users Restricted Rights - Use, duplication or
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* disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
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*/
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/*
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)svc_auth_unix.c 1.6 90/07/19 4.1NFSSRC Copyr 1990 Sun Micro";
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#endif
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*
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* Copyright (c) 1988 by Sun Microsystems, Inc.
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* 1.28 88/02/08
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*/
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/*
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* svc_auth_unix.c
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* Handles UNIX flavor authentication parameters on the service side of rpc.
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* There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT.
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* _svcauth_unix does full blown unix style uid,gid+gids auth,
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* _svcauth_short uses a shorthand auth to index into a cache of longhand auths.
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* Note: the shorthand has been gutted for efficiency.
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*/
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#ifdef _KERNEL
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#include <sys/param.h>
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#include <sys/time.h>
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#include <netinet/in.h>
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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#include <rpc/auth.h>
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#include <rpc/clnt.h>
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#include <rpc/rpc_msg.h>
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#include <rpc/svc.h>
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#include <rpc/auth_unix.h>
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#include <rpc/svc_auth.h>
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#include <nfs/nfs_trc.h>
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#else
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#include <stdio.h>
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#include <rpc/rpc.h>
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#include <sys/syslog.h>
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#include <libc_msg.h>
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#endif
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/*
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* Unix longhand authenticator
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*/
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enum auth_stat
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_svcauth_unix(rqst, msg)
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register struct svc_req *rqst;
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register struct rpc_msg *msg;
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{
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register enum auth_stat stat;
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XDR xdrs;
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register struct authunix_parms *aup;
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register long *buf;
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struct area {
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struct authunix_parms area_aup;
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char area_machname[MAX_MACHINE_NAME+1];
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u_int area_gids[NGRPS];
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} *area;
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u_int auth_len;
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int str_len, gid_len;
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register int i;
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area = (struct area *) rqst->rq_clntcred;
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aup = &area->area_aup;
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aup->aup_machname = area->area_machname;
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aup->aup_gids = area->area_gids;
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auth_len = (u_int)msg->rm_call.cb_cred.oa_length;
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xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,XDR_DECODE);
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buf = XDR_INLINE(&xdrs, auth_len);
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if (buf != NULL) {
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aup->aup_time = IXDR_GET_LONG(buf);
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str_len = IXDR_GET_U_LONG(buf);
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if (str_len > MAX_MACHINE_NAME) {
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stat = AUTH_BADCRED;
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goto done;
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}
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bcopy((caddr_t)buf, aup->aup_machname, (u_int)str_len);
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aup->aup_machname[str_len] = 0;
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str_len = RNDUP(str_len);
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buf += str_len / sizeof (long);
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aup->aup_uid = IXDR_GET_LONG(buf);
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aup->aup_gid = IXDR_GET_LONG(buf);
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gid_len = IXDR_GET_U_LONG(buf);
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if (gid_len > NGRPS) {
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stat = AUTH_BADCRED;
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goto done;
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}
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aup->aup_len = gid_len;
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for (i = 0; i < gid_len; i++) {
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aup->aup_gids[i] = IXDR_GET_LONG(buf);
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}
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/*
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* five is the smallest unix credentials structure -
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* timestamp, hostname len (0), uid, gid, and gids len (0).
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*/
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if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len) {
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#ifdef _KERNEL
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TRCHKL3(HKWD_NFS_RPC_DEBUG|hkwd_KRPC_SVCAUTH_U,
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gid_len, str_len, auth_len);
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#else
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(void) syslog(LOG_ERR,
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(char *)oncmsg(LIBCRPC,RPC87,
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"bad auth_len gid %d str %d auth %d"),
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gid_len, str_len, auth_len);
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#endif
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stat = AUTH_BADCRED;
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goto done;
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}
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} else if (! xdr_authunix_parms(&xdrs, aup)) {
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xdrs.x_op = XDR_FREE;
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(void)xdr_authunix_parms(&xdrs, aup);
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stat = AUTH_BADCRED;
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goto done;
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}
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rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL;
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rqst->rq_xprt->xp_verf.oa_length = 0;
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stat = AUTH_OK;
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done:
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XDR_DESTROY(&xdrs);
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return (stat);
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}
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/*
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* Shorthand unix authenticator
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* Looks up longhand in a cache.
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*/
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/*ARGSUSED*/
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enum auth_stat
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_svcauth_short(rqst, msg)
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struct svc_req *rqst;
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struct rpc_msg *msg;
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{
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return (AUTH_REJECTEDCRED);
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}
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