lib/gssapi/test_context.c

   1 /*
   2  * Copyright (c) 2006 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 KTH nor the names of its contributors may be
  18  *    used to endorse or promote products derived from this software without
  19  *    specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
  22  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
  25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  28  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include "krb5/gsskrb5_locl.h"
  35 #include <err.h>
  36 #include <getarg.h>
  37 #include "test_common.h"
  38
  39 RCSID("$Id$");
  40
  41 static char *type_string;
  42 static char *mech_string;
  43 static char *ret_mech_string;
  44 static int dns_canon_flag = -1;
  45 static int mutual_auth_flag = 0;
  46 static int dce_style_flag = 0;
  47 static int wrapunwrap_flag = 0;
  48 static int getverifymic_flag = 0;
  49 static int deleg_flag = 0;
  50 static int version_flag = 0;
  51 static int verbose_flag = 0;
  52 static int help_flag    = 0;
  53
  54 static struct {
  55     const char *name;
  56     gss_OID *oid;
  57 } o2n[] = {
  58     { "krb5", &GSS_KRB5_MECHANISM },
  59     { "spnego", &GSS_SPNEGO_MECHANISM },
  60     { "ntlm", &GSS_NTLM_MECHANISM },
  61     { "sasl-digest-md5", &GSS_SASL_DIGEST_MD5_MECHANISM }
  62 };
  63
  64 static gss_OID
  65 string_to_oid(const char *name)
  66 {
  67     int i;
  68     for (i = 0; i < sizeof(o2n)/sizeof(o2n[0]); i++)
  69         if (strcasecmp(name, o2n[i].name) == 0)
  70             return *o2n[i].oid;
  71     errx(1, "name %s not unknown", name);
  72 }
  73
  74 static const char *
  75 oid_to_string(const gss_OID oid)
  76 {
  77     int i;
  78     for (i = 0; i < sizeof(o2n)/sizeof(o2n[0]); i++)
  79         if (gss_oid_equal(oid, *o2n[i].oid))
  80             return o2n[i].name;
  81     return "unknown oid";
  82 }
  83
  84 static void
  85 loop(gss_OID mechoid,
  86      gss_OID nameoid, const char *target,
  87      gss_cred_id_t init_cred,
  88      gss_ctx_id_t *sctx, gss_ctx_id_t *cctx,
  89      gss_OID *actual_mech,
  90      gss_cred_id_t *deleg_cred)
  91 {
  92     int server_done = 0, client_done = 0;
  93     OM_uint32 maj_stat, min_stat;
  94     gss_name_t gss_target_name;
  95     gss_buffer_desc input_token, output_token;
  96     OM_uint32 flags = 0, ret_cflags, ret_sflags;
  97     gss_OID actual_mech_client;
  98     gss_OID actual_mech_server;
  99
 100     *actual_mech = GSS_C_NO_OID;
 101
 102     flags |= GSS_C_INTEG_FLAG;
 103     flags |= GSS_C_CONF_FLAG;
 104
 105     if (mutual_auth_flag)
 106         flags |= GSS_C_MUTUAL_FLAG;
 107     if (dce_style_flag)
 108         flags |= GSS_C_DCE_STYLE;
 109     if (deleg_flag)
 110         flags |= GSS_C_DELEG_FLAG;
 111
 112     input_token.value = rk_UNCONST(target);
 113     input_token.length = strlen(target);
 114
 115     maj_stat = gss_import_name(&min_stat,
 116                                &input_token,
 117                                nameoid,
 118                                &gss_target_name);
 119     if (GSS_ERROR(maj_stat))
 120         err(1, "import name creds failed with: %d", maj_stat);
 121
 122     input_token.length = 0;
 123     input_token.value = NULL;
 124
 125     while (!server_done || !client_done) {
 126
 127         maj_stat = gss_init_sec_context(&min_stat,
 128                                         init_cred,
 129                                         cctx,
 130                                         gss_target_name,
 131                                         mechoid,
 132                                         flags,
 133                                         0,
 134                                         NULL,
 135                                         &input_token,
 136                                         &actual_mech_client,
 137                                         &output_token,
 138                                         &ret_cflags,
 139                                         NULL);
 140         if (GSS_ERROR(maj_stat))
 141             errx(1, "init_sec_context: %s",
 142                  gssapi_err(maj_stat, min_stat, mechoid));
 143         if (maj_stat & GSS_S_CONTINUE_NEEDED)
 144             ;
 145         else
 146             client_done = 1;
 147
 148         if (client_done && server_done)
 149             break;
 150
 151         if (input_token.length != 0)
 152             gss_release_buffer(&min_stat, &input_token);
 153
 154         maj_stat = gss_accept_sec_context(&min_stat,
 155                                           sctx,
 156                                           GSS_C_NO_CREDENTIAL,
 157                                           &output_token,
 158                                           GSS_C_NO_CHANNEL_BINDINGS,
 159                                           NULL,
 160                                           &actual_mech_server,
 161                                           &input_token,
 162                                           &ret_sflags,
 163                                           NULL,
 164                                           deleg_cred);
 165         if (GSS_ERROR(maj_stat))
 166                 errx(1, "accept_sec_context: %s",
 167                      gssapi_err(maj_stat, min_stat, actual_mech_server));
 168
 169         if (verbose_flag)
 170             printf("%.*s", (int)input_token.length, (char *)input_token.value);
 171
 172         if (output_token.length != 0)
 173             gss_release_buffer(&min_stat, &output_token);
 174
 175         if (maj_stat & GSS_S_CONTINUE_NEEDED)
 176             ;
 177         else
 178             server_done = 1;
 179     }
 180     if (output_token.length != 0)
 181         gss_release_buffer(&min_stat, &output_token);
 182     if (input_token.length != 0)
 183         gss_release_buffer(&min_stat, &input_token);
 184     gss_release_name(&min_stat, &gss_target_name);
 185
 186     if (gss_oid_equal(actual_mech_server, actual_mech_client) == 0)
 187         errx(1, "mech mismatch");
 188     *actual_mech = actual_mech_server;
 189 }
 190
 191 static void
 192 wrapunwrap(gss_ctx_id_t cctx, gss_ctx_id_t sctx, gss_OID mechoid)
 193 {
 194     gss_buffer_desc input_token, output_token, output_token2;
 195     OM_uint32 min_stat, maj_stat;
 196     int32_t flags = 0;
 197     gss_qop_t qop_state;
 198     int conf_state;
 199
 200     input_token.value = "foo";
 201     input_token.length = 3;
 202
 203     maj_stat = gss_wrap(&min_stat, cctx, flags, 0, &input_token,
 204                         &conf_state, &output_token);
 205     if (maj_stat != GSS_S_COMPLETE)
 206         errx(1, "gss_wrap failed: %s",
 207              gssapi_err(maj_stat, min_stat, mechoid));
 208
 209     maj_stat = gss_unwrap(&min_stat, sctx, &output_token,
 210                           &output_token2, &conf_state, &qop_state);
 211     if (maj_stat != GSS_S_COMPLETE)
 212         errx(1, "gss_unwrap failed: %s",
 213              gssapi_err(maj_stat, min_stat, mechoid));
 214 }
 215
 216 static void
 217 getverifymic(gss_ctx_id_t cctx, gss_ctx_id_t sctx, gss_OID mechoid)
 218 {
 219     gss_buffer_desc input_token, output_token;
 220     OM_uint32 min_stat, maj_stat;
 221     gss_qop_t qop_state;
 222
 223     input_token.value = "bar";
 224     input_token.length = 3;
 225
 226     maj_stat = gss_get_mic(&min_stat, cctx, 0, &input_token,
 227                            &output_token);
 228     if (maj_stat != GSS_S_COMPLETE)
 229         errx(1, "gss_get_mic failed: %s",
 230              gssapi_err(maj_stat, min_stat, mechoid));
 231
 232     maj_stat = gss_verify_mic(&min_stat, sctx, &input_token,
 233                               &output_token, &qop_state);
 234     if (maj_stat != GSS_S_COMPLETE)
 235         errx(1, "gss_verify_mic failed: %s",
 236              gssapi_err(maj_stat, min_stat, mechoid));
 237 }
 238
 239
 240 /*
 241  *
 242  */
 243
 244 static struct getargs args[] = {
 245     {"name-type",0,     arg_string, &type_string,  "type of name", NULL },
 246     {"mech-type",0,     arg_string, &mech_string,  "type of mech", NULL },
 247     {"ret-mech-type",0, arg_string, &ret_mech_string,
 248      "type of return mech", NULL },
 249     {"dns-canonicalize",0,arg_negative_flag, &dns_canon_flag,
 250      "use dns to canonicalize", NULL },
 251     {"mutual-auth",0,   arg_flag,       &mutual_auth_flag,"mutual auth", NULL },
 252     {"dce-style",0,     arg_flag,       &dce_style_flag, "dce-style", NULL },
 253     {"wrapunwrap",0,    arg_flag,       &wrapunwrap_flag, "wrap/unwrap", NULL },
 254     {"getverifymic",0,  arg_flag,       &getverifymic_flag,
 255      "get and verify mic", NULL },
 256     {"delegate",0,      arg_flag,       &deleg_flag, "delegate credential", NULL },
 257     {"version", 0,      arg_flag,       &version_flag, "print version", NULL },
 258     {"verbose", 'v',    arg_flag,       &verbose_flag, "verbose", NULL },
 259     {"help",    0,      arg_flag,       &help_flag,  NULL, NULL }
 260 };
 261
 262 static void
 263 usage (int ret)
 264 {
 265     arg_printusage (args, sizeof(args)/sizeof(*args),
 266                     NULL, "service@host");
 267     exit (ret);
 268 }
 269
 270 int
 271 main(int argc, char **argv)
 272 {
 273     int optind = 0;
 274     OM_uint32 min_stat, maj_stat;
 275     gss_ctx_id_t cctx, sctx;
 276     void *ctx;
 277     gss_OID nameoid, mechoid, actual_mech;
 278     gss_cred_id_t deleg_cred = GSS_C_NO_CREDENTIAL;
 279
 280     setprogname(argv[0]);
 281
 282     cctx = sctx = GSS_C_NO_CONTEXT;
 283
 284     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optind))
 285         usage(1);
 286
 287     if (help_flag)
 288         usage (0);
 289
 290     if(version_flag){
 291         print_version(NULL);
 292         exit(0);
 293     }
 294
 295     argc -= optind;
 296     argv += optind;
 297
 298     if (argc != 1)
 299         usage(1);
 300
 301     if (dns_canon_flag != -1)
 302         gsskrb5_set_dns_canonicalize(dns_canon_flag);
 303
 304     if (type_string == NULL)
 305         nameoid = GSS_C_NT_HOSTBASED_SERVICE;
 306     else if (strcmp(type_string, "hostbased-service") == 0)
 307         nameoid = GSS_C_NT_HOSTBASED_SERVICE;
 308     else if (strcmp(type_string, "krb5-principal-name") == 0)
 309         nameoid = GSS_KRB5_NT_PRINCIPAL_NAME;
 310     else
 311         errx(1, "%s not suppported", type_string);
 312
 313     if (mech_string == NULL)
 314         mechoid = GSS_KRB5_MECHANISM;
 315     else
 316         mechoid = string_to_oid(mech_string);
 317
 318     loop(mechoid, nameoid, argv[0], GSS_C_NO_CREDENTIAL,
 319          &sctx, &cctx, &actual_mech, &deleg_cred);
 320
 321     if (verbose_flag)
 322         printf("resulting mech: %s\n", oid_to_string(actual_mech));
 323
 324     if (ret_mech_string) {
 325         gss_OID retoid;
 326
 327         retoid = string_to_oid(ret_mech_string);
 328
 329         if (gss_oid_equal(retoid, actual_mech) == 0)
 330             errx(1, "actual_mech mech is not the expected type %s",
 331                  ret_mech_string);
 332     }
 333
 334     /* XXX should be actual_mech */
 335     if (gss_oid_equal(mechoid, GSS_KRB5_MECHANISM)) {
 336         krb5_context context;
 337         time_t time, skew;
 338         gss_buffer_desc authz_data;
 339         gss_buffer_desc in, out1, out2;
 340         krb5_keyblock *keyblock, *keyblock2;
 341         krb5_timestamp now;
 342         krb5_error_code ret;
 343
 344         ret = krb5_init_context(&context);
 345         if (ret)
 346             errx(1, "krb5_init_context");
 347
 348         ret = krb5_timeofday(context, &now);
 349         if (ret)
 350                 errx(1, "krb5_timeofday failed");
 351
 352         /* client */
 353         maj_stat = gss_krb5_export_lucid_sec_context(&min_stat,
 354                                                      &cctx,
 355                                                      1, /* version */
 356                                                      &ctx);
 357         if (maj_stat != GSS_S_COMPLETE)
 358                 errx(1, "gss_krb5_export_lucid_sec_context failed: %s",
 359                      gssapi_err(maj_stat, min_stat, actual_mech));
 360
 361
 362         maj_stat = gss_krb5_free_lucid_sec_context(&maj_stat, ctx);
 363         if (maj_stat != GSS_S_COMPLETE)
 364             errx(1, "gss_krb5_free_lucid_sec_context failed: %s",
 365                      gssapi_err(maj_stat, min_stat, actual_mech));
 366
 367         /* server */
 368         maj_stat = gss_krb5_export_lucid_sec_context(&min_stat,
 369                                                      &sctx,
 370                                                      1, /* version */
 371                                                      &ctx);
 372         if (maj_stat != GSS_S_COMPLETE)
 373             errx(1, "gss_krb5_export_lucid_sec_context failed: %s",
 374                      gssapi_err(maj_stat, min_stat, actual_mech));
 375         maj_stat = gss_krb5_free_lucid_sec_context(&min_stat, ctx);
 376         if (maj_stat != GSS_S_COMPLETE)
 377             errx(1, "gss_krb5_free_lucid_sec_context failed: %s",
 378                      gssapi_err(maj_stat, min_stat, actual_mech));
 379
 380         maj_stat = gsskrb5_extract_authtime_from_sec_context(&min_stat,
 381                                                              sctx,
 382                                                              &time);
 383         if (maj_stat != GSS_S_COMPLETE)
 384             errx(1, "gsskrb5_extract_authtime_from_sec_context failed: %s",
 385                      gssapi_err(maj_stat, min_stat, actual_mech));
 386
 387         skew = abs(time - now);
 388         if (skew > krb5_get_max_time_skew(context)) {
 389             errx(1, "gsskrb5_extract_authtime_from_sec_context failed: "
 390                  "time skew too great %llu > %llu",
 391                  (unsigned long long)skew,
 392                  (unsigned long long)krb5_get_max_time_skew(context));
 393         }
 394
 395         maj_stat = gsskrb5_extract_service_keyblock(&min_stat,
 396                                                     sctx,
 397                                                     &keyblock);
 398         if (maj_stat != GSS_S_COMPLETE)
 399             errx(1, "gsskrb5_export_service_keyblock failed: %s",
 400                      gssapi_err(maj_stat, min_stat, actual_mech));
 401
 402         krb5_free_keyblock(context, keyblock);
 403
 404         maj_stat = gsskrb5_get_subkey(&min_stat,
 405                                       sctx,
 406                                       &keyblock);
 407         if (maj_stat != GSS_S_COMPLETE
 408             && (!(maj_stat == GSS_S_FAILURE && min_stat == GSS_KRB5_S_KG_NO_SUBKEY)))
 409             errx(1, "gsskrb5_get_subkey server failed: %s",
 410                      gssapi_err(maj_stat, min_stat, actual_mech));
 411
 412         if (maj_stat != GSS_S_COMPLETE)
 413             keyblock = NULL;
 414
 415         maj_stat = gsskrb5_get_subkey(&min_stat,
 416                                       cctx,
 417                                       &keyblock2);
 418         if (maj_stat != GSS_S_COMPLETE
 419             && (!(maj_stat == GSS_S_FAILURE && min_stat == GSS_KRB5_S_KG_NO_SUBKEY)))
 420             errx(1, "gsskrb5_get_subkey client failed: %s",
 421                      gssapi_err(maj_stat, min_stat, actual_mech));
 422
 423         if (maj_stat != GSS_S_COMPLETE)
 424             keyblock2 = NULL;
 425
 426         if (keyblock || keyblock2) {
 427             if (keyblock == NULL)
 428                 errx(1, "server missing token keyblock");
 429             if (keyblock2 == NULL)
 430                 errx(1, "client missing token keyblock");
 431
 432             if (keyblock->keytype != keyblock2->keytype)
 433                 errx(1, "enctype mismatch");
 434             if (keyblock->keyvalue.length != keyblock2->keyvalue.length)
 435                 errx(1, "key length mismatch");
 436             if (memcmp(keyblock->keyvalue.data, keyblock2->keyvalue.data,
 437                        keyblock2->keyvalue.length) != 0)
 438                 errx(1, "key data mismatch");
 439         }
 440
 441         if (keyblock)
 442             krb5_free_keyblock(context, keyblock);
 443         if (keyblock2)
 444             krb5_free_keyblock(context, keyblock2);
 445
 446         maj_stat = gsskrb5_get_initiator_subkey(&min_stat,
 447                                                 sctx,
 448                                                 &keyblock);
 449         if (maj_stat != GSS_S_COMPLETE
 450             && (!(maj_stat == GSS_S_FAILURE && min_stat == GSS_KRB5_S_KG_NO_SUBKEY)))
 451             errx(1, "gsskrb5_get_initiator_subkey failed: %s",
 452                      gssapi_err(maj_stat, min_stat, actual_mech));
 453
 454         if (maj_stat == GSS_S_COMPLETE)
 455             krb5_free_keyblock(context, keyblock);
 456
 457         maj_stat = gsskrb5_extract_authz_data_from_sec_context(&min_stat,
 458                                                                sctx,
 459                                                                128,
 460                                                                &authz_data);
 461         if (maj_stat == GSS_S_COMPLETE)
 462             gss_release_buffer(&min_stat, &authz_data);
 463
 464         krb5_free_context(context);
 465
 466
 467         memset(&out1, 0, sizeof(out1));
 468         memset(&out2, 0, sizeof(out2));
 469
 470         in.value = "foo";
 471         in.length = 3;
 472
 473         gss_pseudo_random(&min_stat, sctx, GSS_C_PRF_KEY_FULL, &in,
 474                           100, &out1);
 475         gss_pseudo_random(&min_stat, cctx, GSS_C_PRF_KEY_FULL, &in,
 476                           100, &out2);
 477
 478         if (out1.length != out2.length)
 479             errx(1, "prf len mismatch");
 480         if (memcmp(out1.value, out2.value, out1.length) != 0)
 481             errx(1, "prf data mismatch");
 482
 483         gss_release_buffer(&min_stat, &out1);
 484
 485         gss_pseudo_random(&min_stat, sctx, GSS_C_PRF_KEY_FULL, &in,
 486                           100, &out1);
 487
 488         if (out1.length != out2.length)
 489             errx(1, "prf len mismatch");
 490         if (memcmp(out1.value, out2.value, out1.length) != 0)
 491             errx(1, "prf data mismatch");
 492
 493         gss_release_buffer(&min_stat, &out1);
 494         gss_release_buffer(&min_stat, &out2);
 495
 496         in.value = "bar";
 497         in.length = 3;
 498
 499         gss_pseudo_random(&min_stat, sctx, GSS_C_PRF_KEY_PARTIAL, &in,
 500                           100, &out1);
 501         gss_pseudo_random(&min_stat, cctx, GSS_C_PRF_KEY_PARTIAL, &in,
 502                           100, &out2);
 503
 504         if (out1.length != out2.length)
 505             errx(1, "prf len mismatch");
 506         if (memcmp(out1.value, out2.value, out1.length) != 0)
 507             errx(1, "prf data mismatch");
 508
 509         gss_release_buffer(&min_stat, &out1);
 510         gss_release_buffer(&min_stat, &out2);
 511
 512         wrapunwrap_flag = 1;
 513         getverifymic_flag = 1;
 514     }
 515
 516     if (wrapunwrap_flag) {
 517         wrapunwrap(cctx, sctx, actual_mech);
 518         wrapunwrap(cctx, sctx, actual_mech);
 519         wrapunwrap(sctx, cctx, actual_mech);
 520         wrapunwrap(sctx, cctx, actual_mech);
 521     }
 522     if (getverifymic_flag) {
 523         getverifymic(cctx, sctx, actual_mech);
 524         getverifymic(cctx, sctx, actual_mech);
 525         getverifymic(sctx, cctx, actual_mech);
 526         getverifymic(sctx, cctx, actual_mech);
 527     }
 528
 529     gss_delete_sec_context(&min_stat, &cctx, NULL);
 530     gss_delete_sec_context(&min_stat, &sctx, NULL);
 531
 532     if (deleg_cred != GSS_C_NO_CREDENTIAL) {
 533
 534         loop(mechoid, nameoid, argv[0], deleg_cred, &cctx, &sctx, &actual_mech, NULL);
 535
 536         gss_delete_sec_context(&min_stat, &cctx, NULL);
 537         gss_delete_sec_context(&min_stat, &sctx, NULL);
 538
 539     }
 540
 541     return 0;
 542 }