crypto/external/bsd/heimdal/dist/lib/gssapi/krb5/pname_to_uid.c

   1 /*      $NetBSD: pname_to_uid.c,v 1.1.1.1 2014/04/24 12:45:29 pettai Exp $      */
   2
   3 /*
   4  * Copyright (c) 2011, PADL Software Pty Ltd.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  *
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * 3. Neither the name of PADL Software nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include "gsskrb5_locl.h"
  36
  37 OM_uint32 GSSAPI_CALLCONV
  38 _gsskrb5_pname_to_uid(OM_uint32 *minor_status,
  39                       const gss_name_t pname,
  40                       const gss_OID mech_type,
  41                       uid_t *uidp)
  42 {
  43 #ifdef NO_LOCALNAME
  44     *minor_status = KRB5_NO_LOCALNAME;
  45     return GSS_S_FAILURE;
  46 #else
  47     krb5_error_code ret;
  48     krb5_context context;
  49     krb5_const_principal princ = (krb5_const_principal)pname;
  50     char localname[256];
  51 #ifdef POSIX_GETPWNAM_R
  52     char pwbuf[2048];
  53     struct passwd pw, *pwd;
  54 #else
  55     struct passwd *pwd;
  56 #endif
  57
  58     GSSAPI_KRB5_INIT(&context);
  59
  60     *minor_status = 0;
  61
  62     ret = krb5_aname_to_localname(context, princ,
  63                                   sizeof(localname), localname);
  64     if (ret != 0) {
  65         *minor_status = ret;
  66         return GSS_S_FAILURE;
  67     }
  68
  69 #ifdef POSIX_GETPWNAM_R
  70     if (getpwnam_r(localname, &pw, pwbuf, sizeof(pwbuf), &pwd) != 0) {
  71         *minor_status = KRB5_NO_LOCALNAME;
  72         return GSS_S_FAILURE;
  73     }
  74 #else
  75     pwd = getpwnam(localname);
  76 #endif
  77
  78     if (pwd == NULL) {
  79         *minor_status = KRB5_NO_LOCALNAME;
  80         return GSS_S_FAILURE;
  81     }
  82
  83     *uidp = pwd->pw_uid;
  84
  85     return GSS_S_COMPLETE;
  86 #endif /* NO_LOCALNAME */
  87 }