crypto/dist/heimdal/appl/test/gssapi_server.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_server.c 14762 2005-04-10 14:47:41Z lha $"
  38         "$NetBSD$");
  39
  40 static int
  41 process_it(int sock,
  42            gss_ctx_id_t context_hdl,
  43            gss_name_t client_name
  44            )
  45 {
  46     OM_uint32 maj_stat, min_stat;
  47     gss_buffer_desc real_input_token, real_output_token;
  48     gss_buffer_t input_token = &real_input_token,
  49         output_token = &real_output_token;
  50     gss_name_t server_name;
  51     int conf_flag;
  52
  53     print_gss_name("User is", client_name);
  54
  55     maj_stat = gss_inquire_context(&min_stat,
  56                                    context_hdl,
  57                                    NULL,
  58                                    &server_name,
  59                                    NULL,
  60                                    NULL,
  61                                    NULL,
  62                                    NULL,
  63                                    NULL);
  64     if (GSS_ERROR(maj_stat))
  65         gss_err (1, min_stat, "gss_inquire_context");
  66
  67     print_gss_name("Server is", server_name);
  68
  69     maj_stat = gss_release_name(&min_stat, &server_name);
  70     if (GSS_ERROR(maj_stat))
  71         gss_err (1, min_stat, "gss_release_name");
  72
  73     /* gss_verify_mic */
  74
  75     read_token (sock, input_token);
  76     read_token (sock, output_token);
  77
  78     maj_stat = gss_verify_mic (&min_stat,
  79                                context_hdl,
  80                                input_token,
  81                                output_token,
  82                                NULL);
  83     if (GSS_ERROR(maj_stat))
  84         gss_err (1, min_stat, "gss_verify_mic");
  85
  86     fprintf (stderr, "gss_verify_mic: %.*s\n", (int)input_token->length,
  87             (char *)input_token->value);
  88
  89     gss_release_buffer (&min_stat, input_token);
  90     gss_release_buffer (&min_stat, output_token);
  91
  92     /* gss_unwrap */
  93
  94     read_token (sock, input_token);
  95
  96     maj_stat = gss_unwrap (&min_stat,
  97                            context_hdl,
  98                            input_token,
  99                            output_token,
 100                            &conf_flag,
 101                            NULL);
 102     if(GSS_ERROR(maj_stat))
 103         gss_err (1, min_stat, "gss_unwrap");
 104
 105     fprintf (stderr, "gss_unwrap: %.*s %s\n", (int)output_token->length,
 106             (char *)output_token->value,
 107              conf_flag ? "CONF" : "INT");
 108
 109     gss_release_buffer (&min_stat, input_token);
 110     gss_release_buffer (&min_stat, output_token);
 111
 112     read_token (sock, input_token);
 113
 114     maj_stat = gss_unwrap (&min_stat,
 115                            context_hdl,
 116                            input_token,
 117                            output_token,
 118                            &conf_flag,
 119                            NULL);
 120     if(GSS_ERROR(maj_stat))
 121         gss_err (1, min_stat, "gss_unwrap");
 122
 123     fprintf (stderr, "gss_unwrap: %.*s %s\n", (int)output_token->length,
 124              (char *)output_token->value,
 125              conf_flag ? "CONF" : "INT");
 126
 127     gss_release_buffer (&min_stat, input_token);
 128     gss_release_buffer (&min_stat, output_token);
 129
 130     return 0;
 131 }
 132
 133 static int
 134 proto (int sock, const char *service)
 135 {
 136     struct sockaddr_in remote, local;
 137     socklen_t addrlen;
 138     gss_ctx_id_t context_hdl = GSS_C_NO_CONTEXT;
 139     gss_buffer_desc real_input_token, real_output_token;
 140     gss_buffer_t input_token = &real_input_token,
 141         output_token = &real_output_token;
 142     OM_uint32 maj_stat, min_stat;
 143     gss_name_t client_name;
 144     struct gss_channel_bindings_struct input_chan_bindings;
 145     gss_cred_id_t delegated_cred_handle = NULL;
 146     krb5_ccache ccache;
 147     u_char init_buf[4];
 148     u_char acct_buf[4];
 149     gss_OID mech_oid;
 150     char *mech, *p;
 151
 152     addrlen = sizeof(local);
 153     if (getsockname (sock, (struct sockaddr *)&local, &addrlen) < 0
 154         || addrlen != sizeof(local))
 155         err (1, "getsockname)");
 156
 157     addrlen = sizeof(remote);
 158     if (getpeername (sock, (struct sockaddr *)&remote, &addrlen) < 0
 159         || addrlen != sizeof(remote))
 160         err (1, "getpeername");
 161
 162     input_chan_bindings.initiator_addrtype = GSS_C_AF_INET;
 163     input_chan_bindings.initiator_address.length = 4;
 164     init_buf[0] = (remote.sin_addr.s_addr >> 24) & 0xFF;
 165     init_buf[1] = (remote.sin_addr.s_addr >> 16) & 0xFF;
 166     init_buf[2] = (remote.sin_addr.s_addr >>  8) & 0xFF;
 167     init_buf[3] = (remote.sin_addr.s_addr >>  0) & 0xFF;
 168
 169     input_chan_bindings.initiator_address.value = init_buf;
 170     input_chan_bindings.acceptor_addrtype = GSS_C_AF_INET;
 171
 172     input_chan_bindings.acceptor_address.length = 4;
 173     acct_buf[0] = (local.sin_addr.s_addr >> 24) & 0xFF;
 174     acct_buf[1] = (local.sin_addr.s_addr >> 16) & 0xFF;
 175     acct_buf[2] = (local.sin_addr.s_addr >>  8) & 0xFF;
 176     acct_buf[3] = (local.sin_addr.s_addr >>  0) & 0xFF;
 177     input_chan_bindings.acceptor_address.value = acct_buf;
 178     input_chan_bindings.application_data.value = emalloc(4);
 179 #if 0
 180     * (unsigned short *)input_chan_bindings.application_data.value =
 181                           remote.sin_port;
 182     * ((unsigned short *)input_chan_bindings.application_data.value + 1) =
 183                           local.sin_port;
 184     input_chan_bindings.application_data.length = 4;
 185 #else
 186     input_chan_bindings.application_data.length = 0;
 187     input_chan_bindings.application_data.value = NULL;
 188 #endif
 189
 190     delegated_cred_handle = GSS_C_NO_CREDENTIAL;
 191
 192     do {
 193         read_token (sock, input_token);
 194         maj_stat =
 195             gss_accept_sec_context (&min_stat,
 196                                     &context_hdl,
 197                                     GSS_C_NO_CREDENTIAL,
 198                                     input_token,
 199                                     &input_chan_bindings,
 200                                     &client_name,
 201                                     &mech_oid,
 202                                     output_token,
 203                                     NULL,
 204                                     NULL,
 205                                     &delegated_cred_handle);
 206         if(GSS_ERROR(maj_stat))
 207             gss_err (1, min_stat, "gss_accept_sec_context");
 208         if (output_token->length != 0)
 209             write_token (sock, output_token);
 210         if (GSS_ERROR(maj_stat)) {
 211             if (context_hdl != GSS_C_NO_CONTEXT)
 212                 gss_delete_sec_context (&min_stat,
 213                                         &context_hdl,
 214                                         GSS_C_NO_BUFFER);
 215             break;
 216         }
 217     } while(maj_stat & GSS_S_CONTINUE_NEEDED);
 218
 219     p = (char *)mech_oid->elements;
 220     if (mech_oid->length == GSS_KRB5_MECHANISM->length
 221         && memcmp(p, GSS_KRB5_MECHANISM->elements, mech_oid->length) == 0)
 222         mech = "Kerberos 5";
 223     else if (mech_oid->length == GSS_SPNEGO_MECHANISM->length
 224         && memcmp(p, GSS_SPNEGO_MECHANISM->elements, mech_oid->length) == 0)
 225         mech = "SPNEGO"; /* XXX Silly, wont show up */
 226     else
 227         mech = "Unknown";
 228
 229     printf("Using mech: %s\n", mech);
 230
 231     if (delegated_cred_handle != GSS_C_NO_CREDENTIAL) {
 232        krb5_context context;
 233
 234        printf("Delegated cred found\n");
 235
 236        maj_stat = krb5_init_context(&context);
 237        maj_stat = krb5_cc_resolve(context, "FILE:/tmp/krb5cc_test", &ccache);
 238        maj_stat = gss_krb5_copy_ccache(&min_stat,
 239                                        delegated_cred_handle,
 240                                        ccache);
 241        if (maj_stat == 0) {
 242            krb5_principal p;
 243            maj_stat = krb5_cc_get_principal(context, ccache, &p);
 244            if (maj_stat == 0) {
 245                char *name;
 246                maj_stat = krb5_unparse_name(context, p, &name);
 247                if (maj_stat == 0) {
 248                    printf("Delegated user is: `%s'\n", name);
 249                    free(name);
 250                }
 251                krb5_free_principal(context, p);
 252            }
 253        }
 254        krb5_cc_close(context, ccache);
 255        gss_release_cred(&min_stat, &delegated_cred_handle);
 256     }
 257
 258     if (fork_flag) {
 259         pid_t pid;
 260         int pipefd[2];
 261
 262         if (pipe (pipefd) < 0)
 263             err (1, "pipe");
 264
 265         pid = fork ();
 266         if (pid < 0)
 267             err (1, "fork");
 268         if (pid != 0) {
 269             gss_buffer_desc buf;
 270
 271             maj_stat = gss_export_sec_context (&min_stat,
 272                                                &context_hdl,
 273                                                &buf);
 274             if (GSS_ERROR(maj_stat))
 275                 gss_err (1, min_stat, "gss_export_sec_context");
 276             write_token (pipefd[1], &buf);
 277             exit (0);
 278         } else {
 279             gss_ctx_id_t context_hdl;
 280             gss_buffer_desc buf;
 281
 282             close (pipefd[1]);
 283             read_token (pipefd[0], &buf);
 284             close (pipefd[0]);
 285             maj_stat = gss_import_sec_context (&min_stat, &buf, &context_hdl);
 286             if (GSS_ERROR(maj_stat))
 287                 gss_err (1, min_stat, "gss_import_sec_context");
 288             gss_release_buffer (&min_stat, &buf);
 289             return process_it (sock, context_hdl, client_name);
 290         }
 291     } else {
 292         return process_it (sock, context_hdl, client_name);
 293     }
 294 }
 295
 296 static int
 297 doit (int port, const char *service)
 298 {
 299     int sock, sock2;
 300     struct sockaddr_in my_addr;
 301     int one = 1;
 302
 303     sock = socket (AF_INET, SOCK_STREAM, 0);
 304     if (sock < 0)
 305         err (1, "socket");
 306
 307     memset (&my_addr, 0, sizeof(my_addr));
 308     my_addr.sin_family      = AF_INET;
 309     my_addr.sin_port        = port;
 310     my_addr.sin_addr.s_addr = INADDR_ANY;
 311
 312     if (setsockopt (sock, SOL_SOCKET, SO_REUSEADDR,
 313                     (void *)&one, sizeof(one)) < 0)
 314         warn ("setsockopt SO_REUSEADDR");
 315
 316     if (bind (sock, (struct sockaddr *)&my_addr, sizeof(my_addr)) < 0)
 317         err (1, "bind");
 318
 319     if (listen (sock, 1) < 0)
 320         err (1, "listen");
 321
 322     sock2 = accept (sock, NULL, NULL);
 323     if (sock2 < 0)
 324         err (1, "accept");
 325
 326     return proto (sock2, service);
 327 }
 328
 329 int
 330 main(int argc, char **argv)
 331 {
 332     krb5_context context = NULL; /* XXX */
 333     int port = server_setup(&context, argc, argv);
 334     return doit (port, service);
 335 }