<commit_before>/*
 * 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
 */

/*
 * 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.
 */

#define xdrmem_create __xdrmem_create
#define xdr_authunix_parms __xdr_authunix_parms

#define __FORCE_GLIBC
#define _GNU_SOURCE
#include <features.h>

#include <stdio.h>
#include <string.h>
#include <rpc/rpc.h>
#include <rpc/svc.h>

/*
 * Unix longhand authenticator
 */
enum auth_stat
_svcauth_unix (struct svc_req *rqst, struct rpc_msg *msg)
{
  enum auth_stat stat;
  XDR xdrs;
  struct authunix_parms *aup;
  int32_t *buf;
  struct area
    {
      struct authunix_parms area_aup;
      char area_machname[MAX_MACHINE_NAME + 1];
      gid_t area_gids[NGRPS];
    }
   *area;
  u_int auth_len;
  u_int str_len, gid_len;
  u_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_INT32 (buf);
      if (str_len > MAX_MACHINE_NAME)
	{
	  stat = AUTH_BADCRED;
	  goto done;
	}
      __memcpy (aup->aup_machname, (caddr_t) buf, (u_int) str_len);
      aup->aup_machname[str_len] = 0;
      str_len = RNDUP (str_len);
      buf = (int32_t *) ((char *) buf + str_len);
      aup->aup_uid = IXDR_GET_LONG (buf);
      aup->aup_gid = IXDR_GET_LONG (buf);
      gid_len = IXDR_GET_U_INT32 (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;
    }

  /* get the verifier */
  if ((u_int)msg->rm_call.cb_verf.oa_length)
    {
      rqst->rq_xprt->xp_verf.oa_flavor =
	msg->rm_call.cb_verf.oa_flavor;
      rqst->rq_xprt->xp_verf.oa_base =
	msg->rm_call.cb_verf.oa_base;
      rqst->rq_xprt->xp_verf.oa_length =
	msg->rm_call.cb_verf.oa_length;
    }
  else
    {
      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 (struct svc_req *rqst attribute_unused, struct rpc_msg *msg attribute_unused)
{
  return AUTH_REJECTEDCRED;
}<commit_msg>hide internal funcs to kill off more relocs<commit_after>/*
 * 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
 */

/*
 * 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.
 */

#define xdrmem_create __xdrmem_create
#define xdr_authunix_parms __xdr_authunix_parms

#define __FORCE_GLIBC
#define _GNU_SOURCE
#include <features.h>

#include <stdio.h>
#include <string.h>
#include <rpc/rpc.h>
#include <rpc/svc.h>

/*
 * Unix longhand authenticator
 */
attribute_hidden
enum auth_stat
_svcauth_unix (struct svc_req *rqst, struct rpc_msg *msg)
{
  enum auth_stat stat;
  XDR xdrs;
  struct authunix_parms *aup;
  int32_t *buf;
  struct area
    {
      struct authunix_parms area_aup;
      char area_machname[MAX_MACHINE_NAME + 1];
      gid_t area_gids[NGRPS];
    }
   *area;
  u_int auth_len;
  u_int str_len, gid_len;
  u_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_INT32 (buf);
      if (str_len > MAX_MACHINE_NAME)
	{
	  stat = AUTH_BADCRED;
	  goto done;
	}
      __memcpy (aup->aup_machname, (caddr_t) buf, (u_int) str_len);
      aup->aup_machname[str_len] = 0;
      str_len = RNDUP (str_len);
      buf = (int32_t *) ((char *) buf + str_len);
      aup->aup_uid = IXDR_GET_LONG (buf);
      aup->aup_gid = IXDR_GET_LONG (buf);
      gid_len = IXDR_GET_U_INT32 (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;
    }

  /* get the verifier */
  if ((u_int)msg->rm_call.cb_verf.oa_length)
    {
      rqst->rq_xprt->xp_verf.oa_flavor =
	msg->rm_call.cb_verf.oa_flavor;
      rqst->rq_xprt->xp_verf.oa_base =
	msg->rm_call.cb_verf.oa_base;
      rqst->rq_xprt->xp_verf.oa_length =
	msg->rm_call.cb_verf.oa_length;
    }
  else
    {
      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 */
attribute_hidden
enum auth_stat
_svcauth_short (struct svc_req *rqst attribute_unused, struct rpc_msg *msg attribute_unused)
{
  return AUTH_REJECTEDCRED;
}
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