www.project-moonshot.org Git - mech_eap.orig/blob - util.h

   1 /*
   2  * Copyright (c) 2010, 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 2003-2010 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 #ifndef _UTIL_H_
  58 #define _UTIL_H_ 1
  59
  60 #include <string.h>
  61 #include <errno.h>
  62
  63 #include <krb5.h>
  64
  65 #ifdef __cplusplus
  66 extern "C" {
  67 #endif
  68
  69 #ifndef MIN             /* Usually found in <sys/param.h>. */
  70 #define MIN(_a,_b)  ((_a)<(_b)?(_a):(_b))
  71 #endif
  72
  73 #define KRB_KEY_TYPE(key)       ((key)->enctype)
  74 #define KRB_KEY_DATA(key)       ((key)->contents)
  75 #define KRB_KEY_LENGTH(key)     ((key)->length)
  76 #define KRB_KEY_INIT(key)       do {        \
  77         KRB_KEY_TYPE(key) = ENCTYPE_NULL;   \
  78         KRB_KEY_DATA(key) = NULL;           \
  79         KRB_KEY_LENGTH(key) = 0;            \
  80     } while (0)
  81
  82 enum gss_eap_token_type {
  83     TOK_TYPE_NONE                    = 0x0000,  /* no token */
  84     TOK_TYPE_MIC                     = 0x0404,  /* RFC 4121 MIC token */
  85     TOK_TYPE_WRAP                    = 0x0504,  /* RFC 4121 wrap token */
  86     TOK_TYPE_EXPORT_NAME             = 0x0401,  /* RFC 2743 exported name */
  87     TOK_TYPE_EXPORT_NAME_COMPOSITE   = 0x0402,  /* draft-ietf-kitten-gss-naming */
  88     TOK_TYPE_DELETE_CONTEXT          = 0x0405,  /* RFC 2743 delete context */
  89     TOK_TYPE_EAP_RESP                = 0x0601,  /* draft-howlett-eap-gss */
  90     TOK_TYPE_EAP_REQ                 = 0x0602,  /* draft-howlett-eap-gss */
  91     TOK_TYPE_EXT_REQ                 = 0x0603,  /* draft-howlett-eap-gss */
  92     TOK_TYPE_EXT_RESP                = 0x0604,  /* to be specified */
  93     TOK_TYPE_GSS_REAUTH              = 0x0605,  /* to be specified */
  94 };
  95
  96 #define EAP_EXPORT_CONTEXT_V1           1
  97
  98 /* util_buffer.c */
  99 OM_uint32
 100 makeStringBuffer(OM_uint32 *minor,
 101                  const char *string,
 102                  gss_buffer_t buffer);
 103
 104 OM_uint32
 105 bufferToString(OM_uint32 *minor,
 106                const gss_buffer_t buffer,
 107                char **pString);
 108
 109 OM_uint32
 110 duplicateBuffer(OM_uint32 *minor,
 111                 const gss_buffer_t src,
 112                 gss_buffer_t dst);
 113
 114 static inline int
 115 bufferEqual(const gss_buffer_t b1, const gss_buffer_t b2)
 116 {
 117     return (b1->length == b2->length &&
 118             memcmp(b1->value, b2->value, b2->length) == 0);
 119 }
 120
 121 static inline int
 122 bufferEqualString(const gss_buffer_t b1, const char *s)
 123 {
 124     gss_buffer_desc b2;
 125
 126     b2.length = strlen(s);
 127     b2.value = (char *)s;
 128
 129     return bufferEqual(b1, &b2);
 130 }
 131
 132 /* util_cksum.c */
 133 int
 134 gssEapSign(krb5_context context,
 135            krb5_cksumtype type,
 136            size_t rrc,
 137            krb5_keyblock *key,
 138            krb5_keyusage sign_usage,
 139            gss_iov_buffer_desc *iov,
 140            int iov_count);
 141
 142 int
 143 gssEapVerify(krb5_context context,
 144              krb5_cksumtype type,
 145              size_t rrc,
 146              krb5_keyblock *key,
 147              krb5_keyusage sign_usage,
 148              gss_iov_buffer_desc *iov,
 149              int iov_count,
 150              int *valid);
 151
 152 #if 0
 153 OM_uint32
 154 gssEapEncodeGssChannelBindings(OM_uint32 *minor,
 155                                gss_channel_bindings_t chanBindings,
 156                                gss_buffer_t encodedBindings);
 157 #endif
 158
 159 /* util_context.c */
 160 OM_uint32 gssEapAllocContext(OM_uint32 *minor, gss_ctx_id_t *pCtx);
 161 OM_uint32 gssEapReleaseContext(OM_uint32 *minor, gss_ctx_id_t *pCtx);
 162
 163 OM_uint32
 164 gssEapMakeToken(OM_uint32 *minor,
 165                 gss_ctx_id_t ctx,
 166                 const gss_buffer_t innerToken,
 167                 enum gss_eap_token_type tokenType,
 168                 gss_buffer_t outputToken);
 169
 170 OM_uint32
 171 gssEapVerifyToken(OM_uint32 *minor,
 172                   gss_ctx_id_t ctx,
 173                   const gss_buffer_t inputToken,
 174                   enum gss_eap_token_type *tokenType,
 175                   gss_buffer_t innerInputToken);
 176
 177 OM_uint32
 178 gssEapContextTime(OM_uint32 *minor,
 179                   gss_ctx_id_t context_handle,
 180                   OM_uint32 *time_rec);
 181
 182 OM_uint32
 183 gssEapDisplayName(OM_uint32 *minor,
 184                   gss_name_t name,
 185                   gss_buffer_t output_name_buffer,
 186                   gss_OID *output_name_type);
 187
 188 /* util_cred.c */
 189 OM_uint32 gssEapAllocCred(OM_uint32 *minor, gss_cred_id_t *pCred);
 190 OM_uint32 gssEapReleaseCred(OM_uint32 *minor, gss_cred_id_t *pCred);
 191
 192 OM_uint32
 193 gssEapAcquireCred(OM_uint32 *minor,
 194                   const gss_name_t desiredName,
 195                   const gss_buffer_t password,
 196                   OM_uint32 timeReq,
 197                   const gss_OID_set desiredMechs,
 198                   int cred_usage,
 199                   gss_cred_id_t *pCred,
 200                   gss_OID_set *pActualMechs,
 201                   OM_uint32 *timeRec);
 202
 203 int gssEapCredAvailable(gss_cred_id_t cred, gss_OID mech);
 204
 205 /* util_crypt.c */
 206 int
 207 gssEapEncrypt(krb5_context context, int dce_style, size_t ec,
 208               size_t rrc, krb5_keyblock *key, int usage, krb5_pointer iv,
 209               gss_iov_buffer_desc *iov, int iov_count);
 210
 211 int
 212 gssEapDecrypt(krb5_context context, int dce_style, size_t ec,
 213               size_t rrc, krb5_keyblock *key, int usage, krb5_pointer iv,
 214               gss_iov_buffer_desc *iov, int iov_count);
 215
 216 krb5_cryptotype
 217 gssEapMapCryptoFlag(OM_uint32 type);
 218
 219 gss_iov_buffer_t
 220 gssEapLocateIov(gss_iov_buffer_desc *iov,
 221                 int iov_count,
 222                 OM_uint32 type);
 223
 224 void
 225 gssEapIovMessageLength(gss_iov_buffer_desc *iov,
 226                        int iov_count,
 227                        size_t *data_length,
 228                        size_t *assoc_data_length);
 229
 230 void
 231 gssEapReleaseIov(gss_iov_buffer_desc *iov, int iov_count);
 232
 233 int
 234 gssEapIsIntegrityOnly(gss_iov_buffer_desc *iov, int iov_count);
 235
 236 int
 237 gssEapAllocIov(gss_iov_buffer_t iov, size_t size);
 238
 239 OM_uint32
 240 gssEapDeriveRfc3961Key(OM_uint32 *minor,
 241                        const unsigned char *key,
 242                        size_t keyLength,
 243                        krb5_enctype enctype,
 244                        krb5_keyblock *pKey);
 245
 246 /* util_exts.c */
 247 #define EXT_FLAG_CRITICAL               0x80000000
 248 #define EXT_FLAG_VERIFIED               0x40000000
 249
 250 #define EXT_TYPE_GSS_CHANNEL_BINDINGS   0x00000000
 251 #define EXT_TYPE_REAUTH_CREDS           0x00000001
 252 #define EXT_TYPE_MASK                   (~(EXT_FLAG_CRITICAL | EXT_FLAG_VERIFIED))
 253
 254 struct gss_eap_extension_provider {
 255     OM_uint32 type;
 256     int critical;
 257     OM_uint32 (*callback)(OM_uint32 *,
 258                           gss_cred_id_t,
 259                           gss_ctx_id_t,
 260                           gss_channel_bindings_t,
 261                           gss_buffer_t);
 262 };
 263
 264 OM_uint32
 265 gssEapMakeExtensions(OM_uint32 *minor,
 266                      gss_cred_id_t cred,
 267                      gss_ctx_id_t ctx,
 268                      const struct gss_eap_extension_provider *exts,
 269                      size_t count,
 270                      gss_channel_bindings_t chanBindings,
 271                      gss_buffer_t buffer);
 272
 273 OM_uint32
 274 gssEapVerifyExtensions(OM_uint32 *minor,
 275                        gss_cred_id_t cred,
 276                        gss_ctx_id_t ctx,
 277                        const struct gss_eap_extension_provider *exts,
 278                        size_t count,
 279                        gss_channel_bindings_t chanBindings,
 280                        const gss_buffer_t buffer);
 281
 282 /* util_krb.c */
 283 OM_uint32
 284 gssEapKerberosInit(OM_uint32 *minor, krb5_context *context);
 285
 286 OM_uint32
 287 rfc3961ChecksumTypeForKey(OM_uint32 *minor,
 288                           krb5_keyblock *key,
 289                           krb5_cksumtype *cksumtype);
 290
 291 #define GSSEAP_KRB_INIT(ctx) do {                   \
 292         OM_uint32 tmpMajor;                         \
 293         tmpMajor  = gssEapKerberosInit(minor, ctx); \
 294         if (GSS_ERROR(tmpMajor)) {                  \
 295             return tmpMajor;                        \
 296         }                                           \
 297     } while (0)
 298
 299 /* util_lucid.c */
 300 OM_uint32
 301 gssEapExportLucidSecContext(OM_uint32 *minor,
 302                             gss_ctx_id_t ctx,
 303                             const gss_OID desiredObject,
 304                             gss_buffer_set_t *data_set);
 305
 306 /* util_mech.c */
 307 extern gss_OID GSS_EAP_MECHANISM;
 308
 309 int
 310 gssEapInternalizeOid(const gss_OID oid,
 311                      gss_OID *const pInternalizedOid);
 312
 313 OM_uint32
 314 gssEapDefaultMech(OM_uint32 *minor,
 315                   gss_OID *oid);
 316
 317 OM_uint32
 318 gssEapIndicateMechs(OM_uint32 *minor,
 319                     gss_OID_set *mechs);
 320
 321 OM_uint32
 322 gssEapEnctypeToOid(OM_uint32 *minor,
 323                    krb5_enctype enctype,
 324                    gss_OID *pOid);
 325
 326 OM_uint32
 327 gssEapOidToEnctype(OM_uint32 *minor,
 328                    const gss_OID oid,
 329                    krb5_enctype *enctype);
 330
 331 int
 332 gssEapIsMechanismOid(const gss_OID oid);
 333
 334 int
 335 gssEapIsConcreteMechanismOid(const gss_OID oid);
 336
 337 OM_uint32
 338 gssEapValidateMechs(OM_uint32 *minor,
 339                    const gss_OID_set mechs);
 340
 341 gss_buffer_t
 342 gssEapOidToSaslName(const gss_OID oid);
 343
 344 gss_OID
 345 gssEapSaslNameToOid(const gss_buffer_t name);
 346
 347 /* util_name.c */
 348 #define EXPORT_NAME_FLAG_OID        0x1
 349 #define EXPORT_NAME_FLAG_COMPOSITE  0x2
 350
 351 OM_uint32 gssEapAllocName(OM_uint32 *minor, gss_name_t *pName);
 352 OM_uint32 gssEapReleaseName(OM_uint32 *minor, gss_name_t *pName);
 353 OM_uint32 gssEapExportName(OM_uint32 *minor,
 354                            const gss_name_t name,
 355                            gss_buffer_t exportedName);
 356 OM_uint32 gssEapExportNameInternal(OM_uint32 *minor,
 357                                    const gss_name_t name,
 358                                    gss_buffer_t exportedName,
 359                                    unsigned int flags);
 360 OM_uint32 gssEapImportName(OM_uint32 *minor,
 361                            const gss_buffer_t input_name_buffer,
 362                            gss_OID input_name_type,
 363                            gss_name_t *output_name);
 364 OM_uint32 gssEapImportNameInternal(OM_uint32 *minor,
 365                                    const gss_buffer_t input_name_buffer,
 366                                    gss_name_t *output_name,
 367                                    unsigned int flags);
 368 OM_uint32
 369 gssEapDuplicateName(OM_uint32 *minor,
 370                     const gss_name_t input_name,
 371                     gss_name_t *dest_name);
 372
 373 /* util_oid.c */
 374 OM_uint32
 375 composeOid(OM_uint32 *minor_status,
 376            const char *prefix,
 377            size_t prefix_len,
 378            int suffix,
 379            gss_OID_desc *oid);
 380
 381 OM_uint32
 382 decomposeOid(OM_uint32 *minor_status,
 383              const char *prefix,
 384              size_t prefix_len,
 385              gss_OID_desc *oid,
 386              int *suffix) ;
 387
 388 OM_uint32
 389 duplicateOid(OM_uint32 *minor_status,
 390              const gss_OID_desc * const oid,
 391              gss_OID *new_oid);
 392
 393 OM_uint32
 394 duplicateOidSet(OM_uint32 *minor,
 395                 const gss_OID_set src,
 396                 gss_OID_set *dst);
 397
 398 static inline int
 399 oidEqual(const gss_OID_desc *o1, const gss_OID_desc *o2)
 400 {
 401     if (o1 == GSS_C_NO_OID)
 402         return (o2 == GSS_C_NO_OID);
 403     else if (o2 == GSS_C_NO_OID)
 404         return (o1 == GSS_C_NO_OID);
 405     else
 406         return (o1->length == o2->length &&
 407                 memcmp(o1->elements, o2->elements, o1->length) == 0);
 408 }
 409
 410 /* util_ordering.c */
 411 OM_uint32
 412 sequenceInternalize(OM_uint32 *minor,
 413                     void **vqueue,
 414                     unsigned char **buf,
 415                     size_t *lenremain);
 416
 417 OM_uint32
 418 sequenceExternalize(OM_uint32 *minor,
 419                     void *vqueue,
 420                     unsigned char **buf,
 421                     size_t *lenremain);
 422
 423 size_t
 424 sequenceSize(void *vqueue);
 425
 426 OM_uint32
 427 sequenceFree(OM_uint32 *minor, void **vqueue);
 428
 429 OM_uint32
 430 sequenceCheck(OM_uint32 *minor, void **vqueue, uint64_t seqnum);
 431
 432 OM_uint32
 433 sequenceInit(OM_uint32 *minor, void **vqueue, uint64_t seqnum,
 434              int do_replay, int do_sequence, int wide_nums);
 435
 436 /* util_token.c */
 437 size_t
 438 tokenSize(const gss_OID_desc *mech, size_t body_size);
 439
 440 void
 441 makeTokenHeader(const gss_OID_desc *mech,
 442                 size_t body_size,
 443                 unsigned char **buf,
 444                 enum gss_eap_token_type tok_type);
 445
 446 OM_uint32
 447 verifyTokenHeader(OM_uint32 *minor,
 448                   gss_OID mech,
 449                   size_t *body_size,
 450                   unsigned char **buf_in,
 451                   size_t toksize_in,
 452                   enum gss_eap_token_type *ret_tok_type);
 453
 454 /* Helper macros */
 455
 456 #define GSSEAP_CALLOC                   calloc
 457 #define GSSEAP_MALLOC                   malloc
 458 #define GSSEAP_FREE                     free
 459 #define GSSEAP_REALLOC                  realloc
 460
 461 #define GSSEAP_NOT_IMPLEMENTED          do {            \
 462         assert(0 && "not implemented");                 \
 463         *minor = ENOSYS;                                \
 464         return GSS_S_FAILURE;                           \
 465     } while (0)
 466
 467 #include <pthread.h>
 468
 469 #define GSSEAP_MUTEX                    pthread_mutex_t
 470 #define GSSEAP_MUTEX_INITIALIZER        PTHREAD_MUTEX_INITIALIZER
 471
 472 #define GSSEAP_MUTEX_INIT(m)            pthread_mutex_init((m), NULL)
 473 #define GSSEAP_MUTEX_DESTROY(m)         pthread_mutex_destroy((m))
 474 #define GSSEAP_MUTEX_LOCK(m)            pthread_mutex_lock((m))
 475 #define GSSEAP_MUTEX_UNLOCK(m)          pthread_mutex_unlock((m))
 476
 477 #define GSSEAP_THREAD_KEY               pthread_key_t
 478 #define GSSEAP_KEY_CREATE(k, d)         pthread_key_create((k), (d))
 479 #define GSSEAP_GETSPECIFIC(k)           pthread_getspecific((k))
 480 #define GSSEAP_SETSPECIFIC(k, d)        pthread_setspecific((k), (d))
 481
 482 #define GSSEAP_THREAD_ONCE              pthread_once_t
 483 #define GSSEAP_ONCE(o, i)               pthread_once((o), (i))
 484 #define GSSEAP_ONCE_INITIALIZER         PTHREAD_ONCE_INIT
 485
 486 /* Helper functions */
 487 static inline void
 488 store_uint16_be(uint16_t val, void *vp)
 489 {
 490     unsigned char *p = (unsigned char *)vp;
 491
 492     p[0] = (val >>  8) & 0xff;
 493     p[1] = (val      ) & 0xff;
 494 }
 495
 496 static inline uint16_t
 497 load_uint16_be(const void *cvp)
 498 {
 499     const unsigned char *p = (const unsigned char *)cvp;
 500
 501     return (p[1] | (p[0] << 8));
 502 }
 503
 504 static inline void
 505 store_uint32_be(uint32_t val, void *vp)
 506 {
 507     unsigned char *p = (unsigned char *)vp;
 508
 509     p[0] = (val >> 24) & 0xff;
 510     p[1] = (val >> 16) & 0xff;
 511     p[2] = (val >>  8) & 0xff;
 512     p[3] = (val      ) & 0xff;
 513 }
 514
 515 static inline uint32_t
 516 load_uint32_be(const void *cvp)
 517 {
 518     const unsigned char *p = (const unsigned char *)cvp;
 519
 520     return (p[3] | (p[2] << 8)
 521             | ((uint32_t) p[1] << 16)
 522             | ((uint32_t) p[0] << 24));
 523 }
 524
 525 static inline void
 526 store_uint64_be(uint64_t val, void *vp)
 527 {
 528     unsigned char *p = (unsigned char *)vp;
 529
 530     p[0] = (unsigned char)((val >> 56) & 0xff);
 531     p[1] = (unsigned char)((val >> 48) & 0xff);
 532     p[2] = (unsigned char)((val >> 40) & 0xff);
 533     p[3] = (unsigned char)((val >> 32) & 0xff);
 534     p[4] = (unsigned char)((val >> 24) & 0xff);
 535     p[5] = (unsigned char)((val >> 16) & 0xff);
 536     p[6] = (unsigned char)((val >>  8) & 0xff);
 537     p[7] = (unsigned char)((val      ) & 0xff);
 538 }
 539
 540 static inline uint64_t
 541 load_uint64_be(const void *cvp)
 542 {
 543     const unsigned char *p = (const unsigned char *)cvp;
 544
 545     return ((uint64_t)load_uint32_be(p) << 32) | load_uint32_be(p + 4);
 546 }
 547
 548 static inline unsigned char *
 549 store_buffer(gss_buffer_t buffer, void *vp, int wide_nums)
 550 {
 551     unsigned char *p = (unsigned char *)vp;
 552
 553     if (wide_nums) {
 554         store_uint64_be(buffer->length, p);
 555         p += 8;
 556     } else {
 557         store_uint32_be(buffer->length, p);
 558         p += 4;
 559     }
 560
 561     if (buffer->value != NULL) {
 562         memcpy(p, buffer->value, buffer->length);
 563         p += buffer->length;
 564     }
 565
 566     return p;
 567 }
 568
 569 static inline unsigned char *
 570 load_buffer(const void *cvp, size_t length, gss_buffer_t buffer)
 571 {
 572     buffer->length = 0;
 573     buffer->value = GSSEAP_MALLOC(length);
 574     if (buffer->value == NULL)
 575         return NULL;
 576     buffer->length = length;
 577     memcpy(buffer->value, cvp, length);
 578     return (unsigned char *)cvp + length;
 579 }
 580
 581 static inline unsigned char *
 582 store_oid(gss_OID oid, void *vp)
 583 {
 584     gss_buffer_desc buf;
 585
 586     if (oid != GSS_C_NO_OID) {
 587         buf.length = oid->length;
 588         buf.value = oid->elements;
 589     } else {
 590         buf.length = 0;
 591         buf.value = NULL;
 592     }
 593
 594     return store_buffer(&buf, vp, FALSE);
 595 }
 596
 597 static inline void
 598 krbDataToGssBuffer(krb5_data *data, gss_buffer_t buffer)
 599 {
 600     buffer->value = (void *)data->data;
 601     buffer->length = data->length;
 602 }
 603
 604 static inline void
 605 gssBufferToKrbData(gss_buffer_t buffer, krb5_data *data)
 606 {
 607     data->data = (char *)buffer->value;
 608     data->length = buffer->length;
 609 }
 610
 611 #ifdef __cplusplus
 612 }
 613 #endif
 614
 615 #include "util_attr.h"
 616 #ifdef GSSEAP_ENABLE_REAUTH
 617 #include "util_reauth.h"
 618 #endif
 619
 620 #endif /* _UTIL_H_ */