appl/test/nt_gss_client.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 "test_locl.h"
  35 #include <gssapi.h>
  36 #include "nt_gss_common.h"
  37
  38 RCSID("$Id$");
  39
  40 /*
  41  * This program tries to act as a client for the sample in `Sample
  42  * SSPI Code' in Windows 2000 RC1 SDK.
  43  */
  44
  45 static int
  46 proto (int sock, const char *hostname, const char *service)
  47 {
  48     struct sockaddr_in remote, local;
  49     socklen_t addrlen;
  50
  51     int context_established = 0;
  52     gss_ctx_id_t context_hdl = GSS_C_NO_CONTEXT;
  53     gss_buffer_t input_token, output_token;
  54     gss_buffer_desc real_input_token, real_output_token;
  55     OM_uint32 maj_stat, min_stat;
  56     gss_name_t server;
  57     gss_buffer_desc name_token;
  58     char *str;
  59
  60     name_token.length = asprintf (&str,
  61                                   "%s@%s", service, hostname);
  62     if (str == NULL)
  63         errx(1, "out of memory");
  64     name_token.value = str;
  65
  66     maj_stat = gss_import_name (&min_stat,
  67                                 &name_token,
  68                                 GSS_C_NT_HOSTBASED_SERVICE,
  69                                 &server);
  70     if (GSS_ERROR(maj_stat))
  71         gss_err (1, min_stat,
  72                  "Error importing name `%s@%s':\n", service, hostname);
  73
  74     addrlen = sizeof(local);
  75     if (getsockname (sock, (struct sockaddr *)&local, &addrlen) < 0
  76         || addrlen != sizeof(local))
  77         err (1, "getsockname(%s)", hostname);
  78
  79     addrlen = sizeof(remote);
  80     if (getpeername (sock, (struct sockaddr *)&remote, &addrlen) < 0
  81         || addrlen != sizeof(remote))
  82         err (1, "getpeername(%s)", hostname);
  83
  84     input_token = &real_input_token;
  85     output_token = &real_output_token;
  86
  87     input_token->length = 0;
  88     output_token->length = 0;
  89
  90     while(!context_established) {
  91         maj_stat =
  92             gss_init_sec_context(&min_stat,
  93                                  GSS_C_NO_CREDENTIAL,
  94                                  &context_hdl,
  95                                  server,
  96                                  GSS_C_NO_OID,
  97                                  GSS_C_MUTUAL_FLAG | GSS_C_SEQUENCE_FLAG,
  98                                  0,
  99                                  GSS_C_NO_CHANNEL_BINDINGS,
 100                                  input_token,
 101                                  NULL,
 102                                  output_token,
 103                                  NULL,
 104                                  NULL);
 105         if (GSS_ERROR(maj_stat))
 106             gss_err (1, min_stat, "gss_init_sec_context");
 107         if (output_token->length != 0)
 108             nt_write_token (sock, output_token);
 109         if (GSS_ERROR(maj_stat)) {
 110             if (context_hdl != GSS_C_NO_CONTEXT)
 111                 gss_delete_sec_context (&min_stat,
 112                                         &context_hdl,
 113                                         GSS_C_NO_BUFFER);
 114             break;
 115         }
 116         if (maj_stat & GSS_S_CONTINUE_NEEDED) {
 117             nt_read_token (sock, input_token);
 118         } else {
 119             context_established = 1;
 120         }
 121
 122     }
 123
 124     /* get_mic */
 125
 126     input_token->length = 3;
 127     input_token->value  = strdup("hej");
 128
 129     maj_stat = gss_get_mic(&min_stat,
 130                            context_hdl,
 131                            GSS_C_QOP_DEFAULT,
 132                            input_token,
 133                            output_token);
 134     if (GSS_ERROR(maj_stat))
 135         gss_err (1, min_stat, "gss_get_mic");
 136
 137     nt_write_token (sock, input_token);
 138     nt_write_token (sock, output_token);
 139
 140     /* wrap */
 141
 142     input_token->length = 7;
 143     input_token->value  = "hemligt";
 144
 145
 146     maj_stat = gss_wrap (&min_stat,
 147                          context_hdl,
 148                          1,
 149                          GSS_C_QOP_DEFAULT,
 150                          input_token,
 151                          NULL,
 152                          output_token);
 153     if (GSS_ERROR(maj_stat))
 154         gss_err (1, min_stat, "gss_wrap");
 155
 156     nt_write_token (sock, output_token);
 157
 158     return 0;
 159 }
 160
 161 int
 162 main(int argc, char **argv)
 163 {
 164     krb5_context context; /* XXX */
 165     int port = client_setup(&context, &argc, argv);
 166     return client_doit (argv[argc], port, service, proto);
 167 }