GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/rpc/svc_auth_unix.c Lines: 0 37 0.0 %
Date: 2017-11-13 Branches: 0 14 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: svc_auth_unix.c,v 1.13 2015/11/01 03:45:29 guenther Exp $ */
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/*
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 * Copyright (c) 2010, Oracle America, Inc.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are
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 * met:
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 *
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 *     * Redistributions of source code must retain the above copyright
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 *       notice, this list of conditions and the following disclaimer.
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 *     * Redistributions in binary form must reproduce the above
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 *       copyright notice, this list of conditions and the following
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 *       disclaimer in the documentation and/or other materials
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 *       provided with the distribution.
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 *     * Neither the name of the "Oracle America, Inc." nor the names of its
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 *       contributors may be used to endorse or promote products derived
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 *       from this software without specific prior written permission.
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 *
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 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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 *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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 *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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 *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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 *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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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#include <stdio.h>
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#include <rpc/rpc.h>
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#include <string.h>
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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(struct svc_req *rqst, struct rpc_msg *msg)
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{
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	enum auth_stat stat;
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	XDR xdrs;
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	struct authunix_parms *aup;
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	int32_t *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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		int area_gids[NGRPS];
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	} *area;
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	u_int auth_len;
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	u_int str_len, gid_len;
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	u_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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		memcpy(aup->aup_machname, (caddr_t)buf, (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 (int32_t);
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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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			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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DEF_STRONG(_svcauth_unix);
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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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enum auth_stat
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_svcauth_short(struct svc_req *rqst, struct rpc_msg *msg)
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{
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	return (AUTH_REJECTEDCRED);
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}
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DEF_STRONG(_svcauth_short);