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 /*
  58  * Utility functions.
  59  */
  60
  61 #ifndef _UTIL_H_
  62 #define _UTIL_H_ 1
  63
  64 #include <sys/param.h>
  65 #include <string.h>
  66 #include <errno.h>
  67
  68 #include <krb5.h>
  69
  70 #ifdef __cplusplus
  71 extern "C" {
  72 #endif
  73
  74 #ifndef MIN
  75 #define MIN(_a,_b)  ((_a)<(_b)?(_a):(_b))
  76 #endif
  77
  78 /* util_buffer.c */
  79 OM_uint32
  80 makeStringBuffer(OM_uint32 *minor,
  81                  const char *string,
  82                  gss_buffer_t buffer);
  83
  84 OM_uint32
  85 bufferToString(OM_uint32 *minor,
  86                const gss_buffer_t buffer,
  87                char **pString);
  88
  89 OM_uint32
  90 duplicateBuffer(OM_uint32 *minor,
  91                 const gss_buffer_t src,
  92                 gss_buffer_t dst);
  93
  94 static inline int
  95 bufferEqual(const gss_buffer_t b1, const gss_buffer_t b2)
  96 {
  97     return (b1->length == b2->length &&
  98             memcmp(b1->value, b2->value, b2->length) == 0);
  99 }
 100
 101 static inline int
 102 bufferEqualString(const gss_buffer_t b1, const char *s)
 103 {
 104     gss_buffer_desc b2;
 105
 106     b2.length = strlen(s);
 107     b2.value = (char *)s;
 108
 109     return bufferEqual(b1, &b2);
 110 }
 111
 112 /* util_cksum.c */
 113 int
 114 gssEapSign(krb5_context context,
 115            krb5_cksumtype type,
 116            size_t rrc,
 117            krb5_keyblock *key,
 118            krb5_keyusage sign_usage,
 119            gss_iov_buffer_desc *iov,
 120            int iov_count);
 121
 122 int
 123 gssEapVerify(krb5_context context,
 124              krb5_cksumtype type,
 125              size_t rrc,
 126              krb5_keyblock *key,
 127              krb5_keyusage sign_usage,
 128              gss_iov_buffer_desc *iov,
 129              int iov_count,
 130              int *valid);
 131
 132 #if 0
 133 OM_uint32
 134 gssEapEncodeGssChannelBindings(OM_uint32 *minor,
 135                                gss_channel_bindings_t chanBindings,
 136                                gss_buffer_t encodedBindings);
 137 #endif
 138
 139 /* util_context.c */
 140 #define EAP_EXPORT_CONTEXT_V1           1
 141
 142 enum gss_eap_token_type {
 143     TOK_TYPE_NONE                    = 0x0000,  /* no token */
 144     TOK_TYPE_MIC                     = 0x0404,  /* RFC 4121 MIC token */
 145     TOK_TYPE_WRAP                    = 0x0504,  /* RFC 4121 wrap token */
 146     TOK_TYPE_EXPORT_NAME             = 0x0401,  /* RFC 2743 exported name */
 147     TOK_TYPE_EXPORT_NAME_COMPOSITE   = 0x0402,  /* exported composite name */
 148     TOK_TYPE_DELETE_CONTEXT          = 0x0405,  /* RFC 2743 delete context */
 149     TOK_TYPE_EAP_RESP                = 0x0601,  /* EAP response */
 150     TOK_TYPE_EAP_REQ                 = 0x0602,  /* EAP request */
 151     TOK_TYPE_EXT_REQ                 = 0x0603,  /* GSS EAP extensions request */
 152     TOK_TYPE_EXT_RESP                = 0x0604,  /* GSS EAP extensions response */
 153     TOK_TYPE_GSS_REAUTH              = 0x0605,  /* GSS EAP fast reauthentication token */
 154     TOK_TYPE_CONTEXT_ERR             = 0x0606,  /* context error */
 155 };
 156
 157 OM_uint32 gssEapAllocContext(OM_uint32 *minor, gss_ctx_id_t *pCtx);
 158 OM_uint32 gssEapReleaseContext(OM_uint32 *minor, gss_ctx_id_t *pCtx);
 159
 160 OM_uint32
 161 gssEapMakeToken(OM_uint32 *minor,
 162                 gss_ctx_id_t ctx,
 163                 const gss_buffer_t innerToken,
 164                 enum gss_eap_token_type tokenType,
 165                 gss_buffer_t outputToken);
 166
 167 OM_uint32
 168 gssEapVerifyToken(OM_uint32 *minor,
 169                   gss_ctx_id_t ctx,
 170                   const gss_buffer_t inputToken,
 171                   enum gss_eap_token_type *tokenType,
 172                   gss_buffer_t innerInputToken);
 173
 174 OM_uint32
 175 gssEapContextTime(OM_uint32 *minor,
 176                   gss_ctx_id_t context_handle,
 177                   OM_uint32 *time_rec);
 178
 179 OM_uint32
 180 gssEapDisplayName(OM_uint32 *minor,
 181                   gss_name_t name,
 182                   gss_buffer_t output_name_buffer,
 183                   gss_OID *output_name_type);
 184
 185 /* util_cred.c */
 186 OM_uint32 gssEapAllocCred(OM_uint32 *minor, gss_cred_id_t *pCred);
 187 OM_uint32 gssEapReleaseCred(OM_uint32 *minor, gss_cred_id_t *pCred);
 188
 189 OM_uint32
 190 gssEapAcquireCred(OM_uint32 *minor,
 191                   const gss_name_t desiredName,
 192                   const gss_buffer_t password,
 193                   OM_uint32 timeReq,
 194                   const gss_OID_set desiredMechs,
 195                   int cred_usage,
 196                   gss_cred_id_t *pCred,
 197                   gss_OID_set *pActualMechs,
 198                   OM_uint32 *timeRec);
 199
 200 int gssEapCredAvailable(gss_cred_id_t cred, gss_OID mech);
 201
 202 /* util_crypt.c */
 203 int
 204 gssEapEncrypt(krb5_context context, int dce_style, size_t ec,
 205               size_t rrc, krb5_keyblock *key, int usage, krb5_pointer iv,
 206               gss_iov_buffer_desc *iov, int iov_count);
 207
 208 int
 209 gssEapDecrypt(krb5_context context, int dce_style, size_t ec,
 210               size_t rrc, krb5_keyblock *key, int usage, krb5_pointer iv,
 211               gss_iov_buffer_desc *iov, int iov_count);
 212
 213 krb5_cryptotype
 214 gssEapMapCryptoFlag(OM_uint32 type);
 215
 216 gss_iov_buffer_t
 217 gssEapLocateIov(gss_iov_buffer_desc *iov,
 218                 int iov_count,
 219                 OM_uint32 type);
 220
 221 void
 222 gssEapIovMessageLength(gss_iov_buffer_desc *iov,
 223                        int iov_count,
 224                        size_t *data_length,
 225                        size_t *assoc_data_length);
 226
 227 void
 228 gssEapReleaseIov(gss_iov_buffer_desc *iov, int iov_count);
 229
 230 int
 231 gssEapIsIntegrityOnly(gss_iov_buffer_desc *iov, int iov_count);
 232
 233 int
 234 gssEapAllocIov(gss_iov_buffer_t iov, size_t size);
 235
 236 OM_uint32
 237 gssEapDeriveRfc3961Key(OM_uint32 *minor,
 238                        const unsigned char *key,
 239                        size_t keyLength,
 240                        krb5_enctype enctype,
 241                        krb5_keyblock *pKey);
 242
 243 /* util_exts.c */
 244 #define EXT_FLAG_CRITICAL               0x80000000  /* critical, wire flag */
 245 #define EXT_FLAG_VERIFIED               0x40000000  /* verified, API flag */
 246
 247 #define EXT_TYPE_GSS_CHANNEL_BINDINGS   0x00000000
 248 #define EXT_TYPE_REAUTH_CREDS           0x00000001
 249 #define EXT_TYPE_MASK                   (~(EXT_FLAG_CRITICAL | EXT_FLAG_VERIFIED))
 250
 251 struct gss_eap_extension_provider {
 252     OM_uint32 type;
 253     int critical; /* client */
 254     int required; /* server */
 255     OM_uint32 (*make)(OM_uint32 *,
 256                       gss_cred_id_t,
 257                       gss_ctx_id_t,
 258                       gss_channel_bindings_t,
 259                       gss_buffer_t);
 260     OM_uint32 (*verify)(OM_uint32 *,
 261                         gss_cred_id_t,
 262                         gss_ctx_id_t,
 263                         gss_channel_bindings_t,
 264                         const gss_buffer_t);
 265 };
 266
 267 OM_uint32
 268 gssEapMakeExtensions(OM_uint32 *minor,
 269                      gss_cred_id_t cred,
 270                      gss_ctx_id_t ctx,
 271                      gss_channel_bindings_t chanBindings,
 272                      gss_buffer_t buffer);
 273
 274 OM_uint32
 275 gssEapVerifyExtensions(OM_uint32 *minor,
 276                        gss_cred_id_t cred,
 277                        gss_ctx_id_t ctx,
 278                        gss_channel_bindings_t chanBindings,
 279                        const gss_buffer_t buffer);
 280
 281 /* util_krb.c */
 282 #define KRB_KEY_TYPE(key)       ((key)->enctype)
 283 #define KRB_KEY_DATA(key)       ((key)->contents)
 284 #define KRB_KEY_LENGTH(key)     ((key)->length)
 285 #define KRB_KEY_INIT(key)       do {        \
 286         KRB_KEY_TYPE(key) = ENCTYPE_NULL;   \
 287         KRB_KEY_DATA(key) = NULL;           \
 288         KRB_KEY_LENGTH(key) = 0;            \
 289     } while (0)
 290
 291 #define GSSEAP_KRB_INIT(ctx) do {                   \
 292         OM_uint32 tmpMajor;                         \
 293                                                     \
 294         tmpMajor  = gssEapKerberosInit(minor, ctx); \
 295         if (GSS_ERROR(tmpMajor)) {                  \
 296             return tmpMajor;                        \
 297         }                                           \
 298     } while (0)
 299
 300 OM_uint32
 301 gssEapKerberosInit(OM_uint32 *minor, krb5_context *context);
 302
 303 OM_uint32
 304 rfc3961ChecksumTypeForKey(OM_uint32 *minor,
 305                           krb5_keyblock *key,
 306                           krb5_cksumtype *cksumtype);
 307
 308 /* util_lucid.c */
 309 OM_uint32
 310 gssEapExportLucidSecContext(OM_uint32 *minor,
 311                             gss_ctx_id_t ctx,
 312                             const gss_OID desiredObject,
 313                             gss_buffer_set_t *data_set);
 314
 315 /* util_mech.c */
 316 extern gss_OID GSS_EAP_MECHANISM;
 317
 318 int
 319 gssEapInternalizeOid(const gss_OID oid,
 320                      gss_OID *const pInternalizedOid);
 321
 322 OM_uint32
 323 gssEapDefaultMech(OM_uint32 *minor,
 324                   gss_OID *oid);
 325
 326 OM_uint32
 327 gssEapIndicateMechs(OM_uint32 *minor,
 328                     gss_OID_set *mechs);
 329
 330 OM_uint32
 331 gssEapEnctypeToOid(OM_uint32 *minor,
 332                    krb5_enctype enctype,
 333                    gss_OID *pOid);
 334
 335 OM_uint32
 336 gssEapOidToEnctype(OM_uint32 *minor,
 337                    const gss_OID oid,
 338                    krb5_enctype *enctype);
 339
 340 int
 341 gssEapIsMechanismOid(const gss_OID oid);
 342
 343 int
 344 gssEapIsConcreteMechanismOid(const gss_OID oid);
 345
 346 OM_uint32
 347 gssEapValidateMechs(OM_uint32 *minor,
 348                    const gss_OID_set mechs);
 349
 350 gss_buffer_t
 351 gssEapOidToSaslName(const gss_OID oid);
 352
 353 gss_OID
 354 gssEapSaslNameToOid(const gss_buffer_t name);
 355
 356 /* util_name.c */
 357 #define EXPORT_NAME_FLAG_OID        0x1
 358 #define EXPORT_NAME_FLAG_COMPOSITE  0x2
 359
 360 OM_uint32 gssEapAllocName(OM_uint32 *minor, gss_name_t *pName);
 361 OM_uint32 gssEapReleaseName(OM_uint32 *minor, gss_name_t *pName);
 362 OM_uint32 gssEapExportName(OM_uint32 *minor,
 363                            const gss_name_t name,
 364                            gss_buffer_t exportedName);
 365 OM_uint32 gssEapExportNameInternal(OM_uint32 *minor,
 366                                    const gss_name_t name,
 367                                    gss_buffer_t exportedName,
 368                                    unsigned int flags);
 369 OM_uint32 gssEapImportName(OM_uint32 *minor,
 370                            const gss_buffer_t input_name_buffer,
 371                            gss_OID input_name_type,
 372                            gss_name_t *output_name);
 373 OM_uint32 gssEapImportNameInternal(OM_uint32 *minor,
 374                                    const gss_buffer_t input_name_buffer,
 375                                    gss_name_t *output_name,
 376                                    unsigned int flags);
 377 OM_uint32
 378 gssEapDuplicateName(OM_uint32 *minor,
 379                     const gss_name_t input_name,
 380                     gss_name_t *dest_name);
 381
 382 /* util_oid.c */
 383 OM_uint32
 384 composeOid(OM_uint32 *minor_status,
 385            const char *prefix,
 386            size_t prefix_len,
 387            int suffix,
 388            gss_OID_desc *oid);
 389
 390 OM_uint32
 391 decomposeOid(OM_uint32 *minor_status,
 392              const char *prefix,
 393              size_t prefix_len,
 394              gss_OID_desc *oid,
 395              int *suffix) ;
 396
 397 OM_uint32
 398 duplicateOid(OM_uint32 *minor_status,
 399              const gss_OID_desc * const oid,
 400              gss_OID *new_oid);
 401
 402 OM_uint32
 403 duplicateOidSet(OM_uint32 *minor,
 404                 const gss_OID_set src,
 405                 gss_OID_set *dst);
 406
 407 static inline int
 408 oidEqual(const gss_OID_desc *o1, const gss_OID_desc *o2)
 409 {
 410     if (o1 == GSS_C_NO_OID)
 411         return (o2 == GSS_C_NO_OID);
 412     else if (o2 == GSS_C_NO_OID)
 413         return (o1 == GSS_C_NO_OID);
 414     else
 415         return (o1->length == o2->length &&
 416                 memcmp(o1->elements, o2->elements, o1->length) == 0);
 417 }
 418
 419 /* util_ordering.c */
 420 OM_uint32
 421 sequenceInternalize(OM_uint32 *minor,
 422                     void **vqueue,
 423                     unsigned char **buf,
 424                     size_t *lenremain);
 425
 426 OM_uint32
 427 sequenceExternalize(OM_uint32 *minor,
 428                     void *vqueue,
 429                     unsigned char **buf,
 430                     size_t *lenremain);
 431
 432 size_t
 433 sequenceSize(void *vqueue);
 434
 435 OM_uint32
 436 sequenceFree(OM_uint32 *minor, void **vqueue);
 437
 438 OM_uint32
 439 sequenceCheck(OM_uint32 *minor, void **vqueue, uint64_t seqnum);
 440
 441 OM_uint32
 442 sequenceInit(OM_uint32 *minor, void **vqueue, uint64_t seqnum,
 443              int do_replay, int do_sequence, int wide_nums);
 444
 445 /* util_token.c */
 446 size_t
 447 tokenSize(const gss_OID_desc *mech, size_t body_size);
 448
 449 void
 450 makeTokenHeader(const gss_OID_desc *mech,
 451                 size_t body_size,
 452                 unsigned char **buf,
 453                 enum gss_eap_token_type tok_type);
 454
 455 OM_uint32
 456 verifyTokenHeader(OM_uint32 *minor,
 457                   gss_OID mech,
 458                   size_t *body_size,
 459                   unsigned char **buf_in,
 460                   size_t toksize_in,
 461                   enum gss_eap_token_type *ret_tok_type);
 462
 463 /* Helper macros */
 464
 465 #define GSSEAP_CALLOC                   calloc
 466 #define GSSEAP_MALLOC                   malloc
 467 #define GSSEAP_FREE                     free
 468 #define GSSEAP_REALLOC                  realloc
 469
 470 #define GSSEAP_NOT_IMPLEMENTED          do {            \
 471         assert(0 && "not implemented");                 \
 472         *minor = ENOSYS;                                \
 473         return GSS_S_FAILURE;                           \
 474     } while (0)
 475
 476 #include <pthread.h>
 477
 478 #define GSSEAP_MUTEX                    pthread_mutex_t
 479 #define GSSEAP_MUTEX_INITIALIZER        PTHREAD_MUTEX_INITIALIZER
 480
 481 #define GSSEAP_MUTEX_INIT(m)            pthread_mutex_init((m), NULL)
 482 #define GSSEAP_MUTEX_DESTROY(m)         pthread_mutex_destroy((m))
 483 #define GSSEAP_MUTEX_LOCK(m)            pthread_mutex_lock((m))
 484 #define GSSEAP_MUTEX_UNLOCK(m)          pthread_mutex_unlock((m))
 485
 486 #define GSSEAP_THREAD_KEY               pthread_key_t
 487 #define GSSEAP_KEY_CREATE(k, d)         pthread_key_create((k), (d))
 488 #define GSSEAP_GETSPECIFIC(k)           pthread_getspecific((k))
 489 #define GSSEAP_SETSPECIFIC(k, d)        pthread_setspecific((k), (d))
 490
 491 #define GSSEAP_THREAD_ONCE              pthread_once_t
 492 #define GSSEAP_ONCE(o, i)               pthread_once((o), (i))
 493 #define GSSEAP_ONCE_INITIALIZER         PTHREAD_ONCE_INIT
 494
 495 /* Helper functions */
 496 static inline void
 497 store_uint16_be(uint16_t val, void *vp)
 498 {
 499     unsigned char *p = (unsigned char *)vp;
 500
 501     p[0] = (val >>  8) & 0xff;
 502     p[1] = (val      ) & 0xff;
 503 }
 504
 505 static inline uint16_t
 506 load_uint16_be(const void *cvp)
 507 {
 508     const unsigned char *p = (const unsigned char *)cvp;
 509
 510     return (p[1] | (p[0] << 8));
 511 }
 512
 513 static inline void
 514 store_uint32_be(uint32_t val, void *vp)
 515 {
 516     unsigned char *p = (unsigned char *)vp;
 517
 518     p[0] = (val >> 24) & 0xff;
 519     p[1] = (val >> 16) & 0xff;
 520     p[2] = (val >>  8) & 0xff;
 521     p[3] = (val      ) & 0xff;
 522 }
 523
 524 static inline uint32_t
 525 load_uint32_be(const void *cvp)
 526 {
 527     const unsigned char *p = (const unsigned char *)cvp;
 528
 529     return (p[3] | (p[2] << 8)
 530             | ((uint32_t) p[1] << 16)
 531             | ((uint32_t) p[0] << 24));
 532 }
 533
 534 static inline void
 535 store_uint64_be(uint64_t val, void *vp)
 536 {
 537     unsigned char *p = (unsigned char *)vp;
 538
 539     p[0] = (unsigned char)((val >> 56) & 0xff);
 540     p[1] = (unsigned char)((val >> 48) & 0xff);
 541     p[2] = (unsigned char)((val >> 40) & 0xff);
 542     p[3] = (unsigned char)((val >> 32) & 0xff);
 543     p[4] = (unsigned char)((val >> 24) & 0xff);
 544     p[5] = (unsigned char)((val >> 16) & 0xff);
 545     p[6] = (unsigned char)((val >>  8) & 0xff);
 546     p[7] = (unsigned char)((val      ) & 0xff);
 547 }
 548
 549 static inline uint64_t
 550 load_uint64_be(const void *cvp)
 551 {
 552     const unsigned char *p = (const unsigned char *)cvp;
 553
 554     return ((uint64_t)load_uint32_be(p) << 32) | load_uint32_be(p + 4);
 555 }
 556
 557 static inline unsigned char *
 558 store_buffer(gss_buffer_t buffer, void *vp, int wide_nums)
 559 {
 560     unsigned char *p = (unsigned char *)vp;
 561
 562     if (wide_nums) {
 563         store_uint64_be(buffer->length, p);
 564         p += 8;
 565     } else {
 566         store_uint32_be(buffer->length, p);
 567         p += 4;
 568     }
 569
 570     if (buffer->value != NULL) {
 571         memcpy(p, buffer->value, buffer->length);
 572         p += buffer->length;
 573     }
 574
 575     return p;
 576 }
 577
 578 static inline unsigned char *
 579 load_buffer(const void *cvp, size_t length, gss_buffer_t buffer)
 580 {
 581     buffer->length = 0;
 582     buffer->value = GSSEAP_MALLOC(length);
 583     if (buffer->value == NULL)
 584         return NULL;
 585     buffer->length = length;
 586     memcpy(buffer->value, cvp, length);
 587     return (unsigned char *)cvp + length;
 588 }
 589
 590 static inline unsigned char *
 591 store_oid(gss_OID oid, void *vp)
 592 {
 593     gss_buffer_desc buf;
 594
 595     if (oid != GSS_C_NO_OID) {
 596         buf.length = oid->length;
 597         buf.value = oid->elements;
 598     } else {
 599         buf.length = 0;
 600         buf.value = NULL;
 601     }
 602
 603     return store_buffer(&buf, vp, FALSE);
 604 }
 605
 606 static inline void
 607 krbDataToGssBuffer(krb5_data *data, gss_buffer_t buffer)
 608 {
 609     buffer->value = (void *)data->data;
 610     buffer->length = data->length;
 611 }
 612
 613 static inline void
 614 gssBufferToKrbData(gss_buffer_t buffer, krb5_data *data)
 615 {
 616     data->data = (char *)buffer->value;
 617     data->length = buffer->length;
 618 }
 619
 620 #ifdef __cplusplus
 621 }
 622 #endif
 623
 624 #include "util_attr.h"
 625 #ifdef GSSEAP_ENABLE_REAUTH
 626 #include "util_reauth.h"
 627 #endif
 628
 629 #endif /* _UTIL_H_ */