lib/krb5/mk_req.c

   1 /*
   2  * Copyright (c) 1997 - 2004 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 <krb5_locl.h>
  35
  36 krb5_error_code KRB5_LIB_FUNCTION
  37 krb5_mk_req_exact(krb5_context context,
  38                   krb5_auth_context *auth_context,
  39                   const krb5_flags ap_req_options,
  40                   const krb5_principal server,
  41                   krb5_data *in_data,
  42                   krb5_ccache ccache,
  43                   krb5_data *outbuf)
  44 {
  45     krb5_error_code ret;
  46     krb5_creds this_cred, *cred;
  47
  48     memset(&this_cred, 0, sizeof(this_cred));
  49
  50     ret = krb5_cc_get_principal(context, ccache, &this_cred.client);
  51
  52     if(ret)
  53         return ret;
  54
  55     ret = krb5_copy_principal (context, server, &this_cred.server);
  56     if (ret) {
  57         krb5_free_cred_contents (context, &this_cred);
  58         return ret;
  59     }
  60
  61     this_cred.times.endtime = 0;
  62     if (auth_context && *auth_context && (*auth_context)->keytype)
  63         this_cred.session.keytype = (*auth_context)->keytype;
  64
  65     ret = krb5_get_credentials (context, 0, ccache, &this_cred, &cred);
  66     krb5_free_cred_contents(context, &this_cred);
  67     if (ret)
  68         return ret;
  69
  70     ret = krb5_mk_req_extended (context,
  71                                 auth_context,
  72                                 ap_req_options,
  73                                 in_data,
  74                                 cred,
  75                                 outbuf);
  76     krb5_free_creds(context, cred);
  77     return ret;
  78 }
  79
  80 krb5_error_code KRB5_LIB_FUNCTION
  81 krb5_mk_req(krb5_context context,
  82             krb5_auth_context *auth_context,
  83             const krb5_flags ap_req_options,
  84             const char *service,
  85             const char *hostname,
  86             krb5_data *in_data,
  87             krb5_ccache ccache,
  88             krb5_data *outbuf)
  89 {
  90     krb5_error_code ret;
  91     char **realms;
  92     char *real_hostname;
  93     krb5_principal server;
  94
  95     ret = krb5_expand_hostname_realms (context, hostname,
  96                                        &real_hostname, &realms);
  97     if (ret)
  98         return ret;
  99
 100     ret = krb5_build_principal (context, &server,
 101                                 strlen(*realms),
 102                                 *realms,
 103                                 service,
 104                                 real_hostname,
 105                                 NULL);
 106     free (real_hostname);
 107     krb5_free_host_realm (context, realms);
 108     if (ret)
 109         return ret;
 110     ret = krb5_mk_req_exact (context, auth_context, ap_req_options,
 111                              server, in_data, ccache, outbuf);
 112     krb5_free_principal (context, server);
 113     return ret;
 114 }