/* svc_auth_uni.c - UNIX flavor authentication on service side of rpc *//* Copyright 1984-2001 Wind River Systems, Inc. */#include "copyright_wrs.h"/* * Copyright (C) 1984, Sun Microsystems, Inc. * * 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 *//*modification history--------------------01k,05nov01,vvv  fixed compilation warnings01j,18apr00,ham  fixed compilation warnings.01i,26may92,rrr  the tree shuffle		  -changed includes to have absolute path from h/01h,04oct91,rrr  passed through the ansification filter		  -changed includes to have absolute path from h/		  -fixed #else and #endif		  -changed copyright notice01g,05aug91,del   made ulong *buf non-register for I960 version.01f,25oct90,dnw   removed include of utime.h.01e,19apr90,hjb   de-linted.01d,31oct89,hjb   deleted "char *mem_alloc()" declartion since it's a macro		  in vxWorks.  also deleted redundant definition of RNDUP()		  macro since it's already defined in xdr.h.01c,27oct89,hjb   upgraded to 4.001b,11nov87,jlf   added wrs copyright, title, mod history, etc.		  changed name from svc_auth_unix.c to svc_auth_uni.c, to		      work under sys-V.01a,01nov87,rdc   first VxWorks version*/#ifndef lint/* static char sccsid[] = "@(#)svc_auth_unix.c 1.1 86/02/03 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 "rpc/rpctypes.h"#include "netinet/in.h"#include "rpc/xdr.h"#include "rpc/auth.h"#include "rpc/clnt.h"#include "rpc/rpc_msg.h"#include "rpc/svc.h"#include "rpc/auth_unix.h"#include "rpc/svc_auth.h"#include "vxWorks.h"#include "stdio.h"IMPORT u_long ixdr_get_long ();/* * 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;	long *buf;        	struct area {		struct authunix_parms area_aup;		char area_machname[MAX_MACHINE_NAME];		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) {		/* 4.0 */			stat = AUTH_BADCRED;			/* 4.0 */			goto done;				/* 4.0 */		}						/* 4.0 */		bcopy((char *) buf, aup->aup_machname, 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) {			printf("bad auth_len gid %d str %d auth %d\n",			       gid_len, auth_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);}