www.project-moonshot.org Git - mech_eap.orig/blob - util_name.c

   1 /*
   2  * Copyright (c) 2011, JANET(UK)
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * 3. Neither the name of JANET(UK) nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32 /*
  33  * Portions Copyright 2009 by the Massachusetts Institute of Technology.
  34  * All Rights Reserved.
  35  *
  36  * Export of this software from the United States of America may
  37  *   require a specific license from the United States Government.
  38  *   It is the responsibility of any person or organization contemplating
  39  *   export to obtain such a license before exporting.
  40  *
  41  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
  42  * distribute this software and its documentation for any purpose and
  43  * without fee is hereby granted, provided that the above copyright
  44  * notice appear in all copies and that both that copyright notice and
  45  * this permission notice appear in supporting documentation, and that
  46  * the name of M.I.T. not be used in advertising or publicity pertaining
  47  * to distribution of the software without specific, written prior
  48  * permission.  Furthermore if you modify this software you must label
  49  * your software as modified software and not distribute it in such a
  50  * fashion that it might be confused with the original M.I.T. software.
  51  * M.I.T. makes no representations about the suitability of
  52  * this software for any purpose.  It is provided "as is" without express
  53  * or implied warranty.
  54  */
  55
  56 /*
  57  * Name utility routines.
  58  */
  59
  60 #include "gssapiP_eap.h"
  61
  62 static gss_OID_desc gssEapNtPrincipalName = {
  63     /* 1.3.6.1.4.1.5322.22.2.1  */
  64     10, "\x2B\x06\x01\x04\x01\xA9\x4A\x16\x02\x01"
  65 };
  66
  67 gss_OID GSS_EAP_NT_PRINCIPAL_NAME = &gssEapNtPrincipalName;
  68
  69 OM_uint32
  70 gssEapAllocName(OM_uint32 *minor, gss_name_t *pName)
  71 {
  72     OM_uint32 tmpMinor;
  73     gss_name_t name;
  74
  75     *pName = GSS_C_NO_NAME;
  76
  77     name = (gss_name_t)GSSEAP_CALLOC(1, sizeof(*name));
  78     if (name == NULL) {
  79         *minor = ENOMEM;
  80         return GSS_S_FAILURE;
  81     }
  82
  83     if (GSSEAP_MUTEX_INIT(&name->mutex) != 0) {
  84         *minor = errno;
  85         gssEapReleaseName(&tmpMinor, &name);
  86         return GSS_S_FAILURE;
  87     }
  88
  89     *pName = name;
  90
  91     return GSS_S_COMPLETE;
  92 }
  93
  94 OM_uint32
  95 gssEapReleaseName(OM_uint32 *minor, gss_name_t *pName)
  96 {
  97     gss_name_t name;
  98     krb5_context krbContext = NULL;
  99     OM_uint32 tmpMinor;
 100
 101     *minor = 0;
 102
 103     if (pName == NULL) {
 104         return GSS_S_COMPLETE;
 105     }
 106
 107     name = *pName;
 108     if (name == GSS_C_NO_NAME) {
 109         return GSS_S_COMPLETE;
 110     }
 111
 112     GSSEAP_KRB_INIT(&krbContext);
 113     krb5_free_principal(krbContext, name->krbPrincipal);
 114     gssEapReleaseOid(&tmpMinor, &name->mechanismUsed);
 115
 116     gssEapReleaseAttrContext(&tmpMinor, name);
 117
 118     GSSEAP_MUTEX_DESTROY(&name->mutex);
 119     GSSEAP_FREE(name);
 120     *pName = NULL;
 121
 122     return GSS_S_COMPLETE;
 123 }
 124
 125 static OM_uint32
 126 krbPrincipalToName(OM_uint32 *minor,
 127                    krb5_principal *principal,
 128                    gss_name_t *pName)
 129 {
 130     OM_uint32 major;
 131     gss_name_t name;
 132
 133     major = gssEapAllocName(minor, &name);
 134     if (GSS_ERROR(major))
 135         return major;
 136
 137     name->krbPrincipal = *principal;
 138     *principal = NULL;
 139
 140     if (KRB_PRINC_LENGTH(name->krbPrincipal) > 1) {
 141         name->flags |= NAME_FLAG_SERVICE;
 142     } else {
 143         name->flags |= NAME_FLAG_NAI;
 144     }
 145
 146     *pName = name;
 147     *minor = 0;
 148
 149     return GSS_S_COMPLETE;
 150 }
 151
 152 static OM_uint32
 153 importServiceName(OM_uint32 *minor,
 154                   const gss_buffer_t nameBuffer,
 155                   gss_name_t *pName)
 156 {
 157     OM_uint32 major;
 158     krb5_context krbContext;
 159     krb5_principal krbPrinc;
 160     char *service, *host;
 161
 162     GSSEAP_KRB_INIT(&krbContext);
 163
 164     major = bufferToString(minor, nameBuffer, &service);
 165     if (GSS_ERROR(major))
 166         return major;
 167
 168     host = strchr(service, '@');
 169     if (host != NULL) {
 170         *host = '\0';
 171         host++;
 172     }
 173
 174     /* XXX this is probably NOT what we want to be doing */
 175     if (krb5_sname_to_principal(krbContext, host, service,
 176                                 KRB5_NT_SRV_HST, &krbPrinc) != 0) {
 177         GSSEAP_FREE(service);
 178         *minor = GSSEAP_BAD_SERVICE_NAME;
 179         return GSS_S_FAILURE;
 180     }
 181
 182     major = krbPrincipalToName(minor, &krbPrinc, pName);
 183     if (GSS_ERROR(major)) {
 184         krb5_free_principal(krbContext, krbPrinc);
 185     }
 186
 187     GSSEAP_FREE(service);
 188     return major;
 189 }
 190
 191 static OM_uint32
 192 importUserName(OM_uint32 *minor,
 193                const gss_buffer_t nameBuffer,
 194                gss_name_t *pName)
 195 {
 196     OM_uint32 major;
 197     krb5_context krbContext;
 198     krb5_principal krbPrinc;
 199     char *nameString;
 200
 201     GSSEAP_KRB_INIT(&krbContext);
 202
 203     if (nameBuffer == GSS_C_NO_BUFFER) {
 204         *minor = krb5_copy_principal(krbContext,
 205                                      krbAnonymousPrincipal(), &krbPrinc);
 206         if (*minor != 0)
 207             return GSS_S_FAILURE;
 208     } else {
 209         major = bufferToString(minor, nameBuffer, &nameString);
 210         if (GSS_ERROR(major))
 211             return major;
 212
 213         *minor = krb5_parse_name(krbContext, nameString, &krbPrinc);
 214         if (*minor != 0) {
 215             GSSEAP_FREE(nameString);
 216             return GSS_S_FAILURE;
 217         }
 218     }
 219
 220     major = krbPrincipalToName(minor, &krbPrinc, pName);
 221     if (GSS_ERROR(major)) {
 222         krb5_free_principal(krbContext, krbPrinc);
 223     }
 224
 225     GSSEAP_FREE(nameString);
 226     return major;
 227 }
 228
 229 static OM_uint32
 230 importAnonymousName(OM_uint32 *minor,
 231                     const gss_buffer_t nameBuffer GSSEAP_UNUSED,
 232                     gss_name_t *pName)
 233 {
 234     OM_uint32 major;
 235     krb5_context krbContext;
 236     krb5_principal krbPrinc;
 237
 238     GSSEAP_KRB_INIT(&krbContext);
 239
 240     *minor = krb5_copy_principal(krbContext, krbAnonymousPrincipal(),
 241                                  &krbPrinc);
 242     if (*minor != 0)
 243         return GSS_S_FAILURE;
 244
 245     major = krbPrincipalToName(minor, &krbPrinc, pName);
 246     if (GSS_ERROR(major)) {
 247         krb5_free_principal(krbContext, krbPrinc);
 248     }
 249
 250     return major;
 251 }
 252
 253 #define UPDATE_REMAIN(n)    do {            \
 254         p += (n);                           \
 255         remain -= (n);                      \
 256     } while (0)
 257
 258 #define CHECK_REMAIN(n)     do {        \
 259         if (remain < (n)) {             \
 260             major = GSS_S_BAD_NAME;     \
 261             *minor = GSSEAP_TOK_TRUNC;  \
 262             goto cleanup;               \
 263         }                               \
 264     } while (0)
 265
 266 OM_uint32
 267 gssEapImportNameInternal(OM_uint32 *minor,
 268                          const gss_buffer_t nameBuffer,
 269                          gss_name_t *pName,
 270                          unsigned int flags)
 271 {
 272     OM_uint32 major, tmpMinor;
 273     krb5_context krbContext;
 274     unsigned char *p;
 275     size_t len, remain;
 276     gss_buffer_desc buf;
 277     enum gss_eap_token_type tokType;
 278     gss_name_t name = GSS_C_NO_NAME;
 279
 280     GSSEAP_KRB_INIT(&krbContext);
 281
 282     p = (unsigned char *)nameBuffer->value;
 283     remain = nameBuffer->length;
 284
 285     if (flags & EXPORT_NAME_FLAG_OID) {
 286         gss_OID_desc mech;
 287
 288         /* TOK_ID || MECH_OID_LEN || MECH_OID */
 289         if (remain < 6)
 290             return GSS_S_BAD_NAME;
 291
 292         if (flags & EXPORT_NAME_FLAG_COMPOSITE)
 293             tokType = TOK_TYPE_EXPORT_NAME_COMPOSITE;
 294         else
 295             tokType = TOK_TYPE_EXPORT_NAME;
 296
 297         /* TOK_ID */
 298         if (load_uint16_be(p) != tokType)
 299             return GSS_S_BAD_NAME;
 300         UPDATE_REMAIN(2);
 301
 302         /* MECH_OID_LEN */
 303         len = load_uint16_be(p);
 304         if (len < 2)
 305             return GSS_S_BAD_NAME;
 306         UPDATE_REMAIN(2);
 307
 308         /* MECH_OID */
 309         if (p[0] != 0x06)
 310             return GSS_S_BAD_NAME;
 311
 312         mech.length = p[1];
 313         mech.elements = &p[2];
 314
 315         CHECK_REMAIN(mech.length);
 316
 317         if (!gssEapIsMechanismOid(&mech)) {
 318             major = GSS_S_BAD_NAME;
 319             *minor = GSSEAP_WRONG_MECH;
 320             goto cleanup;
 321         }
 322
 323         if (oidEqual(&mech, GSS_EAP_MECHANISM)) {
 324             name->mechanismUsed = GSS_C_NO_OID;
 325         } else if (!gssEapInternalizeOid(&mech, &name->mechanismUsed)) {
 326             major = duplicateOid(minor, &mech, &name->mechanismUsed);
 327             if (GSS_ERROR(major))
 328                 goto cleanup;
 329         }
 330
 331         UPDATE_REMAIN(2 + mech.length);
 332     }
 333
 334     /* NAME_LEN */
 335     CHECK_REMAIN(4);
 336     len = load_uint32_be(p);
 337     UPDATE_REMAIN(4);
 338
 339     /* NAME */
 340     CHECK_REMAIN(len);
 341     buf.length = len;
 342     buf.value = p;
 343     UPDATE_REMAIN(len);
 344
 345     major = importUserName(minor, &buf, &name);
 346     if (GSS_ERROR(major))
 347         goto cleanup;
 348
 349     if (flags & EXPORT_NAME_FLAG_COMPOSITE) {
 350         gss_buffer_desc buf;
 351
 352         buf.length = remain;
 353         buf.value = p;
 354
 355         major = gssEapImportAttrContext(minor, &buf, name);
 356         if (GSS_ERROR(major))
 357             goto cleanup;
 358     }
 359
 360     major = GSS_S_COMPLETE;
 361     *minor = 0;
 362
 363 cleanup:
 364     if (GSS_ERROR(major))
 365         gssEapReleaseName(&tmpMinor, &name);
 366     else
 367         *pName = name;
 368
 369     return major;
 370 }
 371
 372 static OM_uint32
 373 importExportName(OM_uint32 *minor,
 374                  const gss_buffer_t nameBuffer,
 375                  gss_name_t *name)
 376 {
 377     return gssEapImportNameInternal(minor, nameBuffer, name,
 378                                     EXPORT_NAME_FLAG_OID);
 379 }
 380
 381 #ifdef HAVE_GSS_C_NT_COMPOSITE_EXPORT
 382 static OM_uint32
 383 importCompositeExportName(OM_uint32 *minor,
 384                           const gss_buffer_t nameBuffer,
 385                           gss_name_t *name)
 386 {
 387     return gssEapImportNameInternal(minor, nameBuffer, name,
 388                                     EXPORT_NAME_FLAG_OID |
 389                                     EXPORT_NAME_FLAG_COMPOSITE);
 390 }
 391 #endif
 392
 393 struct gss_eap_name_import_provider {
 394     gss_OID oid;
 395     OM_uint32 (*import)(OM_uint32 *, const gss_buffer_t, gss_name_t *);
 396 };
 397
 398 OM_uint32
 399 gssEapImportName(OM_uint32 *minor,
 400                  const gss_buffer_t nameBuffer,
 401                  gss_OID nameType,
 402                  gss_OID mechType,
 403                  gss_name_t *pName)
 404 {
 405     struct gss_eap_name_import_provider nameTypes[] = {
 406         { GSS_C_NT_USER_NAME,               importUserName              },
 407         { GSS_EAP_NT_PRINCIPAL_NAME,        importUserName              },
 408         { GSS_C_NT_HOSTBASED_SERVICE,       importServiceName           },
 409         { GSS_C_NT_HOSTBASED_SERVICE_X,     importServiceName           },
 410         { GSS_C_NT_ANONYMOUS,               importAnonymousName         },
 411         { GSS_C_NT_EXPORT_NAME,             importExportName            },
 412 #ifdef HAVE_GSS_C_NT_COMPOSITE_EXPORT
 413         { GSS_C_NT_COMPOSITE_EXPORT,        importCompositeExportName   },
 414 #endif
 415     };
 416     size_t i;
 417     OM_uint32 major = GSS_S_BAD_NAMETYPE;
 418     OM_uint32 tmpMinor;
 419     gss_name_t name = GSS_C_NO_NAME;
 420
 421     if (nameType == GSS_C_NO_OID)
 422         nameType = nameTypes[0].oid;
 423
 424     for (i = 0; i < sizeof(nameTypes) / sizeof(nameTypes[0]); i++) {
 425         if (oidEqual(nameTypes[i].oid, nameType)) {
 426             major = nameTypes[i].import(minor, nameBuffer, &name);
 427             break;
 428         }
 429     }
 430
 431     if (major == GSS_S_COMPLETE &&
 432         mechType != GSS_C_NO_OID) {
 433         assert(gssEapIsConcreteMechanismOid(mechType));
 434         assert(name->mechanismUsed == GSS_C_NO_OID);
 435
 436         if (!gssEapInternalizeOid(mechType, &name->mechanismUsed)) {
 437             major = duplicateOid(minor, mechType, &name->mechanismUsed);
 438         }
 439     }
 440
 441     if (GSS_ERROR(major))
 442         gssEapReleaseName(&tmpMinor, &name);
 443     else
 444         *pName = name;
 445
 446     return major;
 447 }
 448
 449 OM_uint32
 450 gssEapExportName(OM_uint32 *minor,
 451                  const gss_name_t name,
 452                  gss_buffer_t exportedName)
 453 {
 454     return gssEapExportNameInternal(minor, name, exportedName,
 455                                     EXPORT_NAME_FLAG_OID);
 456 }
 457
 458 OM_uint32
 459 gssEapExportNameInternal(OM_uint32 *minor,
 460                          const gss_name_t name,
 461                          gss_buffer_t exportedName,
 462                          unsigned int flags)
 463 {
 464     OM_uint32 major = GSS_S_FAILURE, tmpMinor;
 465     krb5_context krbContext;
 466     char *krbName = NULL;
 467     size_t krbNameLen, exportedNameLen;
 468     unsigned char *p;
 469     gss_buffer_desc attrs = GSS_C_EMPTY_BUFFER;
 470     gss_OID mech;
 471
 472     exportedName->length = 0;
 473     exportedName->value = NULL;
 474
 475     if (name->mechanismUsed != GSS_C_NO_OID)
 476         mech = name->mechanismUsed;
 477     else
 478         mech = GSS_EAP_MECHANISM;
 479
 480     GSSEAP_KRB_INIT(&krbContext);
 481
 482     *minor = krb5_unparse_name(krbContext, name->krbPrincipal, &krbName);
 483     if (*minor != 0) {
 484         major = GSS_S_FAILURE;
 485         goto cleanup;
 486     }
 487     krbNameLen = strlen(krbName);
 488
 489     exportedNameLen = 0;
 490     if (flags & EXPORT_NAME_FLAG_OID) {
 491         exportedNameLen += 6 + mech->length;
 492     }
 493     exportedNameLen += 4 + krbNameLen;
 494     if (flags & EXPORT_NAME_FLAG_COMPOSITE) {
 495         major = gssEapExportAttrContext(minor, name, &attrs);
 496         if (GSS_ERROR(major))
 497             goto cleanup;
 498         exportedNameLen += attrs.length;
 499     }
 500
 501     exportedName->value = GSSEAP_MALLOC(exportedNameLen);
 502     if (exportedName->value == NULL) {
 503         major = GSS_S_FAILURE;
 504         *minor = ENOMEM;
 505         goto cleanup;
 506     }
 507     exportedName->length = exportedNameLen;
 508
 509     p = (unsigned char *)exportedName->value;
 510
 511     if (flags & EXPORT_NAME_FLAG_OID) {
 512         /* TOK | MECH_OID_LEN */
 513         store_uint16_be((flags & EXPORT_NAME_FLAG_COMPOSITE)
 514                         ? TOK_TYPE_EXPORT_NAME_COMPOSITE
 515                         : TOK_TYPE_EXPORT_NAME,
 516                         p);
 517         p += 2;
 518         store_uint16_be(mech->length + 2, p);
 519         p += 2;
 520
 521         /* MECH_OID */
 522         *p++ = 0x06;
 523         *p++ = mech->length & 0xff;
 524         memcpy(p, mech->elements, mech->length);
 525         p += mech->length;
 526     }
 527
 528     /* NAME_LEN */
 529     store_uint32_be(krbNameLen, p);
 530     p += 4;
 531
 532     /* NAME */
 533     memcpy(p, krbName, krbNameLen);
 534     p += krbNameLen;
 535
 536     if (flags & EXPORT_NAME_FLAG_COMPOSITE) {
 537         memcpy(p, attrs.value, attrs.length);
 538         p += attrs.length;
 539     }
 540
 541     assert(p == (unsigned char *)exportedName->value + exportedNameLen);
 542
 543     major = GSS_S_COMPLETE;
 544     *minor = 0;
 545
 546 cleanup:
 547     gss_release_buffer(&tmpMinor, &attrs);
 548     if (GSS_ERROR(major))
 549         gss_release_buffer(&tmpMinor, exportedName);
 550     krb5_free_unparsed_name(krbContext, krbName);
 551
 552     return major;
 553 }
 554
 555 OM_uint32
 556 gssEapDuplicateName(OM_uint32 *minor,
 557                     const gss_name_t input_name,
 558                     gss_name_t *dest_name)
 559 {
 560     OM_uint32 major, tmpMinor;
 561     krb5_context krbContext;
 562     gss_name_t name;
 563
 564     if (input_name == GSS_C_NO_NAME) {
 565         *minor = EINVAL;
 566         return GSS_S_CALL_INACCESSIBLE_READ | GSS_S_BAD_NAME;
 567     }
 568
 569     GSSEAP_KRB_INIT(&krbContext);
 570
 571     major = gssEapAllocName(minor, &name);
 572     if (GSS_ERROR(major)) {
 573         return major;
 574     }
 575
 576     if (input_name->mechanismUsed == GSS_C_NO_OID) {
 577         name->mechanismUsed = GSS_C_NO_OID;
 578     } else if (gssEapIsConcreteMechanismOid(input_name->mechanismUsed)) {
 579         if (!gssEapInternalizeOid(input_name->mechanismUsed,
 580                                   &name->mechanismUsed)) {
 581             major = duplicateOid(minor, input_name->mechanismUsed,
 582                                  &name->mechanismUsed);
 583             if (GSS_ERROR(major))
 584                 goto cleanup;
 585         }
 586     } else {
 587         major = GSS_S_BAD_MECH;
 588         *minor = GSSEAP_WRONG_MECH;
 589         goto cleanup;
 590     }
 591
 592     name->flags = input_name->flags;
 593
 594     *minor = krb5_copy_principal(krbContext, input_name->krbPrincipal,
 595                                  &name->krbPrincipal);
 596     if (*minor != 0) {
 597         major = GSS_S_FAILURE;
 598         goto cleanup;
 599     }
 600
 601     if (input_name->attrCtx != NULL) {
 602         major = gssEapDuplicateAttrContext(minor, input_name, name);
 603         if (GSS_ERROR(major))
 604             goto cleanup;
 605     }
 606
 607     *dest_name = name;
 608
 609 cleanup:
 610     if (GSS_ERROR(major)) {
 611         gssEapReleaseName(&tmpMinor, &name);
 612     }
 613
 614     return major;
 615 }
 616
 617 OM_uint32
 618 gssEapDisplayName(OM_uint32 *minor,
 619                   gss_name_t name,
 620                   gss_buffer_t output_name_buffer,
 621                   gss_OID *output_name_type)
 622 {
 623     OM_uint32 major;
 624     krb5_context krbContext;
 625     char *krbName;
 626     gss_OID name_type;
 627
 628     GSSEAP_KRB_INIT(&krbContext);
 629
 630     output_name_buffer->length = 0;
 631     output_name_buffer->value = NULL;
 632
 633     if (name == GSS_C_NO_NAME) {
 634         *minor = EINVAL;
 635         return GSS_S_CALL_INACCESSIBLE_READ | GSS_S_BAD_NAME;
 636     }
 637
 638     *minor = krb5_unparse_name(krbContext, name->krbPrincipal, &krbName);
 639     if (*minor != 0) {
 640         return GSS_S_FAILURE;
 641     }
 642
 643     major = makeStringBuffer(minor, krbName, output_name_buffer);
 644     if (GSS_ERROR(major)) {
 645         krb5_free_unparsed_name(krbContext, krbName);
 646         return major;
 647     }
 648
 649     krb5_free_unparsed_name(krbContext, krbName);
 650
 651     if (KRB_PRINC_TYPE(name->krbPrincipal) == KRB5_NT_WELLKNOWN &&
 652         krb5_principal_compare(krbContext,
 653                                name->krbPrincipal, krbAnonymousPrincipal())) {
 654         name_type = GSS_C_NT_ANONYMOUS;
 655     } else {
 656         name_type = GSS_EAP_NT_PRINCIPAL_NAME;
 657     }
 658
 659     if (output_name_type != NULL)
 660         *output_name_type = name_type;
 661
 662     return GSS_S_COMPLETE;
 663 }