crypto/dist/heimdal/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("$Heimdal: gssapi_client.c 21521 2007-07-12 13:13:40Z lha $"
  38         "$NetBSD$");
  39
  40 static int
  41 do_trans (int sock, gss_ctx_id_t context_hdl)
  42 {
  43     OM_uint32 maj_stat, min_stat;
  44     gss_buffer_desc real_input_token, real_output_token;
  45     gss_buffer_t input_token = &real_input_token,
  46         output_token = &real_output_token;
  47
  48     /* get_mic */
  49
  50     input_token->length = 3;
  51     input_token->value  = strdup("hej");
  52
  53     maj_stat = gss_get_mic(&min_stat,
  54                            context_hdl,
  55                            GSS_C_QOP_DEFAULT,
  56                            input_token,
  57                            output_token);
  58     if (GSS_ERROR(maj_stat))
  59         gss_err (1, min_stat, "gss_get_mic");
  60
  61     write_token (sock, input_token);
  62     write_token (sock, output_token);
  63
  64     /* wrap */
  65
  66     input_token->length = 7;
  67     input_token->value  = "hemligt";
  68
  69     maj_stat = gss_wrap (&min_stat,
  70                          context_hdl,
  71                          0,
  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     maj_stat = gss_wrap (&min_stat,
  82                          context_hdl,
  83                          1,
  84                          GSS_C_QOP_DEFAULT,
  85                          input_token,
  86                          NULL,
  87                          output_token);
  88     if (GSS_ERROR(maj_stat))
  89         gss_err (1, min_stat, "gss_wrap");
  90
  91     write_token (sock, output_token);
  92
  93     return 0;
  94 }
  95
  96 static int
  97 proto (int sock, const char *hostname, const char *service)
  98 {
  99     struct sockaddr_in remote, local;
 100     socklen_t addrlen;
 101
 102     int context_established = 0;
 103     gss_ctx_id_t context_hdl = GSS_C_NO_CONTEXT;
 104     gss_buffer_desc real_input_token, real_output_token;
 105     gss_buffer_t input_token = &real_input_token,
 106         output_token = &real_output_token;
 107     OM_uint32 maj_stat, min_stat;
 108     gss_name_t server;
 109     gss_buffer_desc name_token;
 110     struct gss_channel_bindings_struct input_chan_bindings;
 111     u_char init_buf[4];
 112     u_char acct_buf[4];
 113     gss_OID mech_oid;
 114     char *str;
 115
 116     mech_oid = select_mech(mech);
 117
 118     name_token.length = asprintf (&str,
 119                                   "%s@%s", service, hostname);
 120     if (str == NULL)
 121         errx(1, "malloc - out of memory");
 122     name_token.value = str;
 123
 124     maj_stat = gss_import_name (&min_stat,
 125                                 &name_token,
 126                                 GSS_C_NT_HOSTBASED_SERVICE,
 127                                 &server);
 128     if (GSS_ERROR(maj_stat))
 129         gss_err (1, min_stat,
 130                  "Error importing name `%s@%s':\n", service, hostname);
 131
 132     addrlen = sizeof(local);
 133     if (getsockname (sock, (struct sockaddr *)&local, &addrlen) < 0
 134         || addrlen != sizeof(local))
 135         err (1, "getsockname(%s)", hostname);
 136
 137     addrlen = sizeof(remote);
 138     if (getpeername (sock, (struct sockaddr *)&remote, &addrlen) < 0
 139         || addrlen != sizeof(remote))
 140         err (1, "getpeername(%s)", hostname);
 141
 142     input_token->length = 0;
 143     output_token->length = 0;
 144
 145     input_chan_bindings.initiator_addrtype = GSS_C_AF_INET;
 146     input_chan_bindings.initiator_address.length = 4;
 147     init_buf[0] = (local.sin_addr.s_addr >> 24) & 0xFF;
 148     init_buf[1] = (local.sin_addr.s_addr >> 16) & 0xFF;
 149     init_buf[2] = (local.sin_addr.s_addr >>  8) & 0xFF;
 150     init_buf[3] = (local.sin_addr.s_addr >>  0) & 0xFF;
 151     input_chan_bindings.initiator_address.value = init_buf;
 152
 153     input_chan_bindings.acceptor_addrtype = GSS_C_AF_INET;
 154     input_chan_bindings.acceptor_address.length = 4;
 155     acct_buf[0] = (remote.sin_addr.s_addr >> 24) & 0xFF;
 156     acct_buf[1] = (remote.sin_addr.s_addr >> 16) & 0xFF;
 157     acct_buf[2] = (remote.sin_addr.s_addr >>  8) & 0xFF;
 158     acct_buf[3] = (remote.sin_addr.s_addr >>  0) & 0xFF;
 159     input_chan_bindings.acceptor_address.value = acct_buf;
 160
 161 #if 0
 162     input_chan_bindings.application_data.value = emalloc(4);
 163     * (unsigned short*)input_chan_bindings.application_data.value = local.sin_port;
 164     * ((unsigned short *)input_chan_bindings.application_data.value + 1) = remote.sin_port;
 165     input_chan_bindings.application_data.length = 4;
 166 #else
 167     input_chan_bindings.application_data.length = 0;
 168     input_chan_bindings.application_data.value = NULL;
 169 #endif
 170
 171     while(!context_established) {
 172         maj_stat =
 173             gss_init_sec_context(&min_stat,
 174                                  GSS_C_NO_CREDENTIAL,
 175                                  &context_hdl,
 176                                  server,
 177                                  mech_oid,
 178                                  GSS_C_MUTUAL_FLAG | GSS_C_SEQUENCE_FLAG
 179                                  | GSS_C_DELEG_FLAG,
 180                                  0,
 181                                  &input_chan_bindings,
 182                                  input_token,
 183                                  NULL,
 184                                  output_token,
 185                                  NULL,
 186                                  NULL);
 187         if (GSS_ERROR(maj_stat))
 188             gss_err (1, min_stat, "gss_init_sec_context");
 189         if (output_token->length != 0)
 190             write_token (sock, output_token);
 191         if (GSS_ERROR(maj_stat)) {
 192             if (context_hdl != GSS_C_NO_CONTEXT)
 193                 gss_delete_sec_context (&min_stat,
 194                                         &context_hdl,
 195                                         GSS_C_NO_BUFFER);
 196             break;
 197         }
 198         if (maj_stat & GSS_S_CONTINUE_NEEDED) {
 199             read_token (sock, input_token);
 200         } else {
 201             context_established = 1;
 202         }
 203
 204     }
 205     if (fork_flag) {
 206         pid_t pid;
 207         int pipefd[2];
 208
 209         if (pipe (pipefd) < 0)
 210             err (1, "pipe");
 211
 212         pid = fork ();
 213         if (pid < 0)
 214             err (1, "fork");
 215         if (pid != 0) {
 216             gss_buffer_desc buf;
 217
 218             maj_stat = gss_export_sec_context (&min_stat,
 219                                                &context_hdl,
 220                                                &buf);
 221             if (GSS_ERROR(maj_stat))
 222                 gss_err (1, min_stat, "gss_export_sec_context");
 223             write_token (pipefd[1], &buf);
 224             exit (0);
 225         } else {
 226             gss_ctx_id_t context_hdl;
 227             gss_buffer_desc buf;
 228
 229             close (pipefd[1]);
 230             read_token (pipefd[0], &buf);
 231             close (pipefd[0]);
 232             maj_stat = gss_import_sec_context (&min_stat, &buf, &context_hdl);
 233             if (GSS_ERROR(maj_stat))
 234                 gss_err (1, min_stat, "gss_import_sec_context");
 235             gss_release_buffer (&min_stat, &buf);
 236             return do_trans (sock, context_hdl);
 237         }
 238     } else {
 239         return do_trans (sock, context_hdl);
 240     }
 241 }
 242
 243 int
 244 main(int argc, char **argv)
 245 {
 246     krb5_context context; /* XXX */
 247     int port = client_setup(&context, &argc, argv);
 248     return client_doit (argv[argc], port, service, proto);
 249 }