crypto/heimdal-0.6.3/lib/45/get_ad_tkt.c

   1 /*
   2  * Copyright (c) 1997, 1999 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "45_locl.h"
  35
  36 RCSID("$Id: get_ad_tkt.c,v 1.4 2001/06/18 13:11:05 assar Exp $");
  37
  38 /* get an additional version 4 ticket via the 524 protocol */
  39
  40 #ifndef NEVERDATE
  41 #define NEVERDATE ((unsigned long)0x7fffffffL)
  42 #endif
  43
  44 int
  45 get_ad_tkt(char *service, char *sinstance, char *realm, int lifetime)
  46 {
  47     krb5_error_code ret;
  48     int code;
  49     krb5_context context;
  50     krb5_ccache id;
  51     krb5_creds in_creds, *out_creds;
  52     CREDENTIALS cred;
  53     time_t now;
  54     char pname[ANAME_SZ], pinst[INST_SZ], prealm[REALM_SZ];
  55
  56     ret = krb5_init_context(&context);
  57     if(ret)
  58         return KFAILURE;
  59     ret = krb5_cc_default(context, &id);
  60     if(ret){
  61         krb5_free_context(context);
  62         return KFAILURE;
  63     }
  64     memset(&in_creds, 0, sizeof(in_creds));
  65     now = time(NULL);
  66     in_creds.times.endtime = krb_life_to_time(time(NULL), lifetime);
  67     if(in_creds.times.endtime == NEVERDATE)
  68         in_creds.times.endtime = 0;
  69     ret = krb5_cc_get_principal(context, id, &in_creds.client);
  70     if(ret){
  71         krb5_cc_close(context, id);
  72         krb5_free_context(context);
  73         return KFAILURE;
  74     }
  75     ret = krb5_524_conv_principal(context, in_creds.client,
  76                                   pname, pinst, prealm);
  77     if(ret){
  78         krb5_free_principal(context, in_creds.client);
  79         krb5_cc_close(context, id);
  80         krb5_free_context(context);
  81         return KFAILURE;
  82     }
  83     ret = krb5_425_conv_principal(context, service, sinstance, realm,
  84                                   &in_creds.server);
  85     if(ret){
  86         krb5_free_principal(context, in_creds.client);
  87         krb5_cc_close(context, id);
  88         krb5_free_context(context);
  89         return KFAILURE;
  90     }
  91     ret = krb5_get_credentials(context,
  92                                0,
  93                                id,
  94                                &in_creds,
  95                                &out_creds);
  96     krb5_free_principal(context, in_creds.client);
  97     krb5_free_principal(context, in_creds.server);
  98     if(ret){
  99         krb5_cc_close(context, id);
 100         krb5_free_context(context);
 101         return KFAILURE;
 102     }
 103     ret = krb524_convert_creds_kdc_ccache(context, id, out_creds, &cred);
 104     krb5_cc_close(context, id);
 105     krb5_free_context(context);
 106     krb5_free_creds(context, out_creds);
 107     if(ret)
 108         return KFAILURE;
 109     code = save_credentials(cred.service, cred.instance, cred.realm,
 110                             cred.session, cred.lifetime, cred.kvno,
 111                             &cred.ticket_st, now);
 112     if(code == NO_TKT_FIL)
 113         code = tf_setup(&cred, pname, pinst);
 114     memset(&cred.session, 0, sizeof(cred.session));
 115     return code;
 116 }