crypto/heimdal-0.6.3/appl/test/gssapi_client.c

   1 /*
   2  * Copyright (c) 1997 - 2000 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 "gss_common.h"
  37 RCSID("$Id: gssapi_client.c,v 1.16 2000/08/09 20:53:06 assar Exp $");
  38
  39 static int
  40 do_trans (int sock, gss_ctx_id_t context_hdl)
  41 {
  42     OM_uint32 maj_stat, min_stat;
  43     gss_buffer_desc real_input_token, real_output_token;
  44     gss_buffer_t input_token = &real_input_token,
  45         output_token = &real_output_token;
  46
  47     /* get_mic */
  48
  49     input_token->length = 3;
  50     input_token->value  = strdup("hej");
  51
  52     maj_stat = gss_get_mic(&min_stat,
  53                            context_hdl,
  54                            GSS_C_QOP_DEFAULT,
  55                            input_token,
  56                            output_token);
  57     if (GSS_ERROR(maj_stat))
  58         gss_err (1, min_stat, "gss_get_mic");
  59
  60     write_token (sock, input_token);
  61     write_token (sock, output_token);
  62
  63     /* wrap */
  64
  65     input_token->length = 7;
  66     input_token->value  = "hemligt";
  67
  68
  69     maj_stat = gss_wrap (&min_stat,
  70                          context_hdl,
  71                          1,
  72                          GSS_C_QOP_DEFAULT,
  73                          input_token,
  74                          NULL,
  75                          output_token);
  76     if (GSS_ERROR(maj_stat))
  77         gss_err (1, min_stat, "gss_wrap");
  78
  79     write_token (sock, output_token);
  80
  81     return 0;
  82 }
  83
  84 static int
  85 proto (int sock, const char *hostname, const char *service)
  86 {
  87     struct sockaddr_in remote, local;
  88     socklen_t addrlen;
  89
  90     int context_established = 0;
  91     gss_ctx_id_t context_hdl = GSS_C_NO_CONTEXT;
  92     gss_buffer_desc real_input_token, real_output_token;
  93     gss_buffer_t input_token = &real_input_token,
  94         output_token = &real_output_token;
  95     OM_uint32 maj_stat, min_stat;
  96     gss_name_t server;
  97     gss_buffer_desc name_token;
  98     struct gss_channel_bindings_struct input_chan_bindings;
  99     u_char init_buf[4];
 100     u_char acct_buf[4];
 101
 102     name_token.length = asprintf ((char **)&name_token.value,
 103                                   "%s@%s", service, hostname);
 104
 105     maj_stat = gss_import_name (&min_stat,
 106                                 &name_token,
 107                                 GSS_C_NT_HOSTBASED_SERVICE,
 108                                 &server);
 109     if (GSS_ERROR(maj_stat))
 110         gss_err (1, min_stat,
 111                  "Error importing name `%s@%s':\n", service, hostname);
 112
 113     addrlen = sizeof(local);
 114     if (getsockname (sock, (struct sockaddr *)&local, &addrlen) < 0
 115         || addrlen != sizeof(local))
 116         err (1, "getsockname(%s)", hostname);
 117
 118     addrlen = sizeof(remote);
 119     if (getpeername (sock, (struct sockaddr *)&remote, &addrlen) < 0
 120         || addrlen != sizeof(remote))
 121         err (1, "getpeername(%s)", hostname);
 122
 123     input_token->length = 0;
 124     output_token->length = 0;
 125
 126     input_chan_bindings.initiator_addrtype = GSS_C_AF_INET;
 127     input_chan_bindings.initiator_address.length = 4;
 128     init_buf[0] = (local.sin_addr.s_addr >> 24) & 0xFF;
 129     init_buf[1] = (local.sin_addr.s_addr >> 16) & 0xFF;
 130     init_buf[2] = (local.sin_addr.s_addr >>  8) & 0xFF;
 131     init_buf[3] = (local.sin_addr.s_addr >>  0) & 0xFF;
 132     input_chan_bindings.initiator_address.value = init_buf;
 133
 134     input_chan_bindings.acceptor_addrtype = GSS_C_AF_INET;
 135     input_chan_bindings.acceptor_address.length = 4;
 136     acct_buf[0] = (remote.sin_addr.s_addr >> 24) & 0xFF;
 137     acct_buf[1] = (remote.sin_addr.s_addr >> 16) & 0xFF;
 138     acct_buf[2] = (remote.sin_addr.s_addr >>  8) & 0xFF;
 139     acct_buf[3] = (remote.sin_addr.s_addr >>  0) & 0xFF;
 140     input_chan_bindings.acceptor_address.value = acct_buf;
 141
 142 #if 0
 143     input_chan_bindings.application_data.value = emalloc(4);
 144     * (unsigned short*)input_chan_bindings.application_data.value = local.sin_port;
 145     * ((unsigned short *)input_chan_bindings.application_data.value + 1) = remote.sin_port;
 146     input_chan_bindings.application_data.length = 4;
 147 #else
 148     input_chan_bindings.application_data.length = 0;
 149     input_chan_bindings.application_data.value = NULL;
 150 #endif
 151
 152     while(!context_established) {
 153         maj_stat =
 154             gss_init_sec_context(&min_stat,
 155                                  GSS_C_NO_CREDENTIAL,
 156                                  &context_hdl,
 157                                  server,
 158                                  GSS_C_NO_OID,
 159                                  GSS_C_MUTUAL_FLAG | GSS_C_SEQUENCE_FLAG
 160                                  | GSS_C_DELEG_FLAG,
 161                                  0,
 162                                  &input_chan_bindings,
 163                                  input_token,
 164                                  NULL,
 165                                  output_token,
 166                                  NULL,
 167                                  NULL);
 168         if (GSS_ERROR(maj_stat))
 169             gss_err (1, min_stat, "gss_init_sec_context");
 170         if (output_token->length != 0)
 171             write_token (sock, output_token);
 172         if (GSS_ERROR(maj_stat)) {
 173             if (context_hdl != GSS_C_NO_CONTEXT)
 174                 gss_delete_sec_context (&min_stat,
 175                                         &context_hdl,
 176                                         GSS_C_NO_BUFFER);
 177             break;
 178         }
 179         if (maj_stat & GSS_S_CONTINUE_NEEDED) {
 180             read_token (sock, input_token);
 181         } else {
 182             context_established = 1;
 183         }
 184
 185     }
 186     if (fork_flag) {
 187         pid_t pid;
 188         int pipefd[2];
 189
 190         if (pipe (pipefd) < 0)
 191             err (1, "pipe");
 192
 193         pid = fork ();
 194         if (pid < 0)
 195             err (1, "fork");
 196         if (pid != 0) {
 197             gss_buffer_desc buf;
 198
 199             maj_stat = gss_export_sec_context (&min_stat,
 200                                                &context_hdl,
 201                                                &buf);
 202             if (GSS_ERROR(maj_stat))
 203                 gss_err (1, min_stat, "gss_export_sec_context");
 204             write_token (pipefd[1], &buf);
 205             exit (0);
 206         } else {
 207             gss_ctx_id_t context_hdl;
 208             gss_buffer_desc buf;
 209
 210             close (pipefd[1]);
 211             read_token (pipefd[0], &buf);
 212             close (pipefd[0]);
 213             maj_stat = gss_import_sec_context (&min_stat, &buf, &context_hdl);
 214             if (GSS_ERROR(maj_stat))
 215                 gss_err (1, min_stat, "gss_import_sec_context");
 216             gss_release_buffer (&min_stat, &buf);
 217             return do_trans (sock, context_hdl);
 218         }
 219     } else {
 220         return do_trans (sock, context_hdl);
 221     }
 222 }
 223
 224 int
 225 main(int argc, char **argv)
 226 {
 227     krb5_context context; /* XXX */
 228     int port = client_setup(&context, &argc, argv);
 229     return client_doit (argv[argc], port, service, proto);
 230 }