svc_auth_uni.c
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上传日期:2007-01-17
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- /* 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 warnings
- 01j,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 notice
- 01g,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 4.0
- 01b,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 %dn",
- 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);
- }