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

   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 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 #ifdef HAVE_HEIMDAL_VERSION
 118            krb5_crypto crypto,
 119 #else
 120            krb5_keyblock *key,
 121 #endif
 122            krb5_keyusage sign_usage,
 123            gss_iov_buffer_desc *iov,
 124            int iov_count);
 125
 126 int
 127 gssEapVerify(krb5_context context,
 128              krb5_cksumtype type,
 129              size_t rrc,
 130 #ifdef HAVE_HEIMDAL_VERSION
 131              krb5_crypto crypto,
 132 #else
 133              krb5_keyblock *key,
 134 #endif
 135              krb5_keyusage sign_usage,
 136              gss_iov_buffer_desc *iov,
 137              int iov_count,
 138              int *valid);
 139
 140 #if 0
 141 OM_uint32
 142 gssEapEncodeGssChannelBindings(OM_uint32 *minor,
 143                                gss_channel_bindings_t chanBindings,
 144                                gss_buffer_t encodedBindings);
 145 #endif
 146
 147 /* util_context.c */
 148 #define EAP_EXPORT_CONTEXT_V1           1
 149
 150 enum gss_eap_token_type {
 151     TOK_TYPE_NONE                    = 0x0000,  /* no token */
 152     TOK_TYPE_MIC                     = 0x0404,  /* RFC 4121 MIC token */
 153     TOK_TYPE_WRAP                    = 0x0504,  /* RFC 4121 wrap token */
 154     TOK_TYPE_EXPORT_NAME             = 0x0401,  /* RFC 2743 exported name */
 155     TOK_TYPE_EXPORT_NAME_COMPOSITE   = 0x0402,  /* exported composite name */
 156     TOK_TYPE_DELETE_CONTEXT          = 0x0405,  /* RFC 2743 delete context */
 157     TOK_TYPE_ESTABLISH_CONTEXT       = 0x0601,  /* establish context */
 158 };
 159
 160 /* inner token types and flags */
 161 #define ITOK_TYPE_NONE                  0x00000000
 162 #define ITOK_TYPE_CONTEXT_ERR           0x00000001
 163 #define ITOK_TYPE_ACCEPTOR_NAME_REQ     0x00000002
 164 #define ITOK_TYPE_ACCEPTOR_NAME_RESP    0x00000003
 165 #define ITOK_TYPE_EAP_RESP              0x00000004
 166 #define ITOK_TYPE_EAP_REQ               0x00000005
 167 #define ITOK_TYPE_GSS_CHANNEL_BINDINGS  0x00000006
 168 #define ITOK_TYPE_REAUTH_CREDS          0x00000007
 169 #define ITOK_TYPE_REAUTH_REQ            0x00000008
 170 #define ITOK_TYPE_REAUTH_RESP           0x00000009
 171
 172 #define ITOK_FLAG_CRITICAL              0x80000000  /* critical, wire flag */
 173 #define ITOK_FLAG_VERIFIED              0x40000000  /* verified, API flag */
 174
 175 #define ITOK_TYPE_MASK                  (~(EXT_FLAG_CRITICAL | EXT_FLAG_VERIFIED))
 176
 177 OM_uint32 gssEapAllocContext(OM_uint32 *minor, gss_ctx_id_t *pCtx);
 178 OM_uint32 gssEapReleaseContext(OM_uint32 *minor, gss_ctx_id_t *pCtx);
 179
 180 OM_uint32
 181 gssEapMakeToken(OM_uint32 *minor,
 182                 gss_ctx_id_t ctx,
 183                 const gss_buffer_t innerToken,
 184                 enum gss_eap_token_type tokenType,
 185                 gss_buffer_t outputToken);
 186
 187 OM_uint32
 188 gssEapVerifyToken(OM_uint32 *minor,
 189                   gss_ctx_id_t ctx,
 190                   const gss_buffer_t inputToken,
 191                   enum gss_eap_token_type *tokenType,
 192                   gss_buffer_t innerInputToken);
 193
 194 OM_uint32
 195 gssEapContextTime(OM_uint32 *minor,
 196                   gss_ctx_id_t context_handle,
 197                   OM_uint32 *time_rec);
 198
 199 OM_uint32
 200 gssEapDisplayName(OM_uint32 *minor,
 201                   gss_name_t name,
 202                   gss_buffer_t output_name_buffer,
 203                   gss_OID *output_name_type);
 204
 205 /* util_cred.c */
 206 OM_uint32 gssEapAllocCred(OM_uint32 *minor, gss_cred_id_t *pCred);
 207 OM_uint32 gssEapReleaseCred(OM_uint32 *minor, gss_cred_id_t *pCred);
 208
 209 OM_uint32
 210 gssEapAcquireCred(OM_uint32 *minor,
 211                   const gss_name_t desiredName,
 212                   const gss_buffer_t password,
 213                   OM_uint32 timeReq,
 214                   const gss_OID_set desiredMechs,
 215                   int cred_usage,
 216                   gss_cred_id_t *pCred,
 217                   gss_OID_set *pActualMechs,
 218                   OM_uint32 *timeRec);
 219
 220 int gssEapCredAvailable(gss_cred_id_t cred, gss_OID mech);
 221
 222 /* util_crypt.c */
 223 int
 224 gssEapEncrypt(krb5_context context, int dce_style, size_t ec,
 225               size_t rrc,
 226 #ifdef HAVE_HEIMDAL_VERSION
 227               krb5_crypto crypto,
 228 #else
 229               krb5_keyblock *key,
 230 #endif
 231               int usage,
 232               gss_iov_buffer_desc *iov, int iov_count);
 233
 234 int
 235 gssEapDecrypt(krb5_context context, int dce_style, size_t ec,
 236               size_t rrc,
 237 #ifdef HAVE_HEIMDAL_VERSION
 238               krb5_crypto crypto,
 239 #else
 240               krb5_keyblock *key,
 241 #endif
 242               int usage,
 243               gss_iov_buffer_desc *iov, int iov_count);
 244
 245 int
 246 gssEapMapCryptoFlag(OM_uint32 type);
 247
 248 gss_iov_buffer_t
 249 gssEapLocateIov(gss_iov_buffer_desc *iov,
 250                 int iov_count,
 251                 OM_uint32 type);
 252
 253 void
 254 gssEapIovMessageLength(gss_iov_buffer_desc *iov,
 255                        int iov_count,
 256                        size_t *data_length,
 257                        size_t *assoc_data_length);
 258
 259 void
 260 gssEapReleaseIov(gss_iov_buffer_desc *iov, int iov_count);
 261
 262 int
 263 gssEapIsIntegrityOnly(gss_iov_buffer_desc *iov, int iov_count);
 264
 265 int
 266 gssEapAllocIov(gss_iov_buffer_t iov, size_t size);
 267
 268 OM_uint32
 269 gssEapDeriveRfc3961Key(OM_uint32 *minor,
 270                        const unsigned char *key,
 271                        size_t keyLength,
 272                        krb5_enctype enctype,
 273                        krb5_keyblock *pKey);
 274
 275 /* util_krb.c */
 276 #ifdef HAVE_HEIMDAL_VERSION
 277
 278 #define KRB_TIME_FOREVER        ((time_t)~0L)
 279
 280 #define KRB_KEY_TYPE(key)       ((key)->keytype)
 281 #define KRB_KEY_DATA(key)       ((key)->keyvalue.data)
 282 #define KRB_KEY_LENGTH(key)     ((key)->keyvalue.length)
 283
 284 #define KRB_PRINC_LENGTH(princ) ((princ)->name.name_string.len)
 285 #define KRB_PRINC_TYPE(princ)   ((princ)->name.name_type)
 286 #define KRB_PRINC_NAME(princ)   ((princ)->name.name_string.val)
 287 #define KRB_PRINC_REALM(princ)  ((princ)->realm)
 288
 289 #define KRB_KT_ENT_KEYBLOCK(e)  (&(e)->keyblock)
 290 #define KRB_KT_ENT_FREE(c, e)   krb5_kt_free_entry((c), (e))
 291
 292 #define KRB_CRYPTO_CONTEXT(ctx) (krbCrypto)
 293
 294 #else
 295
 296 #define KRB_TIME_FOREVER        KRB5_INT32_MAX
 297
 298 #define KRB_KEY_TYPE(key)       ((key)->enctype)
 299 #define KRB_KEY_DATA(key)       ((key)->contents)
 300 #define KRB_KEY_LENGTH(key)     ((key)->length)
 301
 302 #define KRB_PRINC_LENGTH(princ) (krb5_princ_size(NULL, (princ)))
 303 #define KRB_PRINC_TYPE(princ)   (krb5_princ_type(NULL, (princ)))
 304 #define KRB_PRINC_NAME(princ)   (krb5_princ_name(NULL, (princ)))
 305 #define KRB_PRINC_REALM(princ)  (krb5_princ_realm(NULL, (princ)))
 306
 307 #define KRB_KT_ENT_KEYBLOCK(e)  (&(e)->key)
 308 #define KRB_KT_ENT_FREE(c, e)   krb5_free_keytab_entry_contents((c), (e))
 309
 310 #define KRB_CRYPTO_CONTEXT(ctx) (&(ctx)->rfc3961Key)
 311
 312 #endif /* HAVE_HEIMDAL_VERSION */
 313
 314 #define KRB_KEY_INIT(key)       do {        \
 315         KRB_KEY_TYPE(key) = ENCTYPE_NULL;   \
 316         KRB_KEY_DATA(key) = NULL;           \
 317         KRB_KEY_LENGTH(key) = 0;            \
 318     } while (0)
 319
 320 #define GSSEAP_KRB_INIT(ctx) do {                   \
 321         OM_uint32 tmpMajor;                         \
 322                                                     \
 323         tmpMajor  = gssEapKerberosInit(minor, ctx); \
 324         if (GSS_ERROR(tmpMajor)) {                  \
 325             return tmpMajor;                        \
 326         }                                           \
 327     } while (0)
 328
 329 OM_uint32
 330 gssEapKerberosInit(OM_uint32 *minor, krb5_context *context);
 331
 332 OM_uint32
 333 rfc3961ChecksumTypeForKey(OM_uint32 *minor,
 334                           krb5_keyblock *key,
 335                           krb5_cksumtype *cksumtype);
 336
 337 krb5_const_principal
 338 krbAnonymousPrincipal(void);
 339
 340 krb5_error_code
 341 krbCryptoLength(krb5_context krbContext,
 342 #ifdef HAVE_HEIMDAL_VERSION
 343                 krb5_crypto krbCrypto,
 344 #else
 345                 krb5_keyblock *key,
 346 #endif
 347                 int type,
 348                 size_t *length);
 349
 350 krb5_error_code
 351 krbPaddingLength(krb5_context krbContext,
 352 #ifdef HAVE_HEIMDAL_VERSION
 353                  krb5_crypto krbCrypto,
 354 #else
 355                  krb5_keyblock *key,
 356 #endif
 357                  size_t dataLength,
 358                  size_t *padLength);
 359
 360 krb5_error_code
 361 krbBlockSize(krb5_context krbContext,
 362 #ifdef HAVE_HEIMDAL_VERSION
 363                  krb5_crypto krbCrypto,
 364 #else
 365                  krb5_keyblock *key,
 366 #endif
 367                  size_t *blockSize);
 368
 369 krb5_error_code
 370 krbEnctypeToString(krb5_context krbContext,
 371                    krb5_enctype enctype,
 372                    const char *prefix,
 373                    gss_buffer_t string);
 374
 375 krb5_error_code
 376 krbMakeAuthDataKdcIssued(krb5_context context,
 377                          const krb5_keyblock *key,
 378                          krb5_const_principal issuer,
 379 #ifdef HAVE_HEIMDAL_VERSION
 380                          const AuthorizationData *authdata,
 381                          AuthorizationData *adKdcIssued
 382 #else
 383                          krb5_authdata *const *authdata,
 384                          krb5_authdata ***adKdcIssued
 385 #endif
 386                          );
 387
 388 krb5_error_code
 389 krbMakeCred(krb5_context context,
 390             krb5_auth_context authcontext,
 391             krb5_creds *creds,
 392             krb5_data *data);
 393
 394 /* util_lucid.c */
 395 OM_uint32
 396 gssEapExportLucidSecContext(OM_uint32 *minor,
 397                             gss_ctx_id_t ctx,
 398                             const gss_OID desiredObject,
 399                             gss_buffer_set_t *data_set);
 400
 401 /* util_mech.c */
 402 extern gss_OID GSS_EAP_MECHANISM;
 403
 404 int
 405 gssEapInternalizeOid(const gss_OID oid,
 406                      gss_OID *const pInternalizedOid);
 407
 408 OM_uint32
 409 gssEapReleaseOid(OM_uint32 *minor, gss_OID *oid);
 410
 411 OM_uint32
 412 gssEapDefaultMech(OM_uint32 *minor,
 413                   gss_OID *oid);
 414
 415 OM_uint32
 416 gssEapIndicateMechs(OM_uint32 *minor,
 417                     gss_OID_set *mechs);
 418
 419 OM_uint32
 420 gssEapEnctypeToOid(OM_uint32 *minor,
 421                    krb5_enctype enctype,
 422                    gss_OID *pOid);
 423
 424 OM_uint32
 425 gssEapOidToEnctype(OM_uint32 *minor,
 426                    const gss_OID oid,
 427                    krb5_enctype *enctype);
 428
 429 int
 430 gssEapIsMechanismOid(const gss_OID oid);
 431
 432 int
 433 gssEapIsConcreteMechanismOid(const gss_OID oid);
 434
 435 OM_uint32
 436 gssEapValidateMechs(OM_uint32 *minor,
 437                    const gss_OID_set mechs);
 438
 439 gss_buffer_t
 440 gssEapOidToSaslName(const gss_OID oid);
 441
 442 gss_OID
 443 gssEapSaslNameToOid(const gss_buffer_t name);
 444
 445 /* util_name.c */
 446 #define EXPORT_NAME_FLAG_OID        0x1
 447 #define EXPORT_NAME_FLAG_COMPOSITE  0x2
 448
 449 OM_uint32 gssEapAllocName(OM_uint32 *minor, gss_name_t *pName);
 450 OM_uint32 gssEapReleaseName(OM_uint32 *minor, gss_name_t *pName);
 451 OM_uint32 gssEapExportName(OM_uint32 *minor,
 452                            const gss_name_t name,
 453                            gss_buffer_t exportedName);
 454 OM_uint32 gssEapExportNameInternal(OM_uint32 *minor,
 455                                    const gss_name_t name,
 456                                    gss_buffer_t exportedName,
 457                                    unsigned int flags);
 458 OM_uint32 gssEapImportName(OM_uint32 *minor,
 459                            const gss_buffer_t input_name_buffer,
 460                            gss_OID input_name_type,
 461                            gss_name_t *output_name);
 462 OM_uint32 gssEapImportNameInternal(OM_uint32 *minor,
 463                                    const gss_buffer_t input_name_buffer,
 464                                    gss_name_t *output_name,
 465                                    unsigned int flags);
 466 OM_uint32
 467 gssEapDuplicateName(OM_uint32 *minor,
 468                     const gss_name_t input_name,
 469                     gss_name_t *dest_name);
 470
 471 /* util_oid.c */
 472 OM_uint32
 473 composeOid(OM_uint32 *minor_status,
 474            const char *prefix,
 475            size_t prefix_len,
 476            int suffix,
 477            gss_OID_desc *oid);
 478
 479 OM_uint32
 480 decomposeOid(OM_uint32 *minor_status,
 481              const char *prefix,
 482              size_t prefix_len,
 483              gss_OID_desc *oid,
 484              int *suffix) ;
 485
 486 OM_uint32
 487 duplicateOid(OM_uint32 *minor_status,
 488              const gss_OID_desc * const oid,
 489              gss_OID *new_oid);
 490
 491 OM_uint32
 492 duplicateOidSet(OM_uint32 *minor,
 493                 const gss_OID_set src,
 494                 gss_OID_set *dst);
 495
 496 static inline int
 497 oidEqual(const gss_OID_desc *o1, const gss_OID_desc *o2)
 498 {
 499     if (o1 == GSS_C_NO_OID)
 500         return (o2 == GSS_C_NO_OID);
 501     else if (o2 == GSS_C_NO_OID)
 502         return (o1 == GSS_C_NO_OID);
 503     else
 504         return (o1->length == o2->length &&
 505                 memcmp(o1->elements, o2->elements, o1->length) == 0);
 506 }
 507
 508 /* util_ordering.c */
 509 OM_uint32
 510 sequenceInternalize(OM_uint32 *minor,
 511                     void **vqueue,
 512                     unsigned char **buf,
 513                     size_t *lenremain);
 514
 515 OM_uint32
 516 sequenceExternalize(OM_uint32 *minor,
 517                     void *vqueue,
 518                     unsigned char **buf,
 519                     size_t *lenremain);
 520
 521 size_t
 522 sequenceSize(void *vqueue);
 523
 524 OM_uint32
 525 sequenceFree(OM_uint32 *minor, void **vqueue);
 526
 527 OM_uint32
 528 sequenceCheck(OM_uint32 *minor, void **vqueue, uint64_t seqnum);
 529
 530 OM_uint32
 531 sequenceInit(OM_uint32 *minor, void **vqueue, uint64_t seqnum,
 532              int do_replay, int do_sequence, int wide_nums);
 533
 534 /* util_sm.c */
 535 struct gss_eap_sm;
 536
 537 OM_uint32
 538 gssEapSmStep(OM_uint32 *minor,
 539              gss_cred_id_t cred,
 540              gss_ctx_id_t ctx,
 541              gss_name_t target,
 542              gss_OID mech,
 543              OM_uint32 reqFlags,
 544              OM_uint32 timeReq,
 545              gss_channel_bindings_t chanBindings,
 546              gss_buffer_t inputToken,
 547              gss_buffer_t outputToken,
 548              struct gss_eap_sm *sm,
 549              size_t smCount);
 550
 551 /* util_token.c */
 552 OM_uint32
 553 gssEapEncodeInnerTokens(OM_uint32 *minor,
 554                         gss_buffer_set_t extensions,
 555                         OM_uint32 *types,
 556                         gss_buffer_t buffer);
 557 OM_uint32
 558 gssEapDecodeInnerTokens(OM_uint32 *minor,
 559                         const gss_buffer_t buffer,
 560                         gss_buffer_set_t *pExtensions,
 561                         OM_uint32 **pTypes);
 562
 563 size_t
 564 tokenSize(const gss_OID_desc *mech, size_t body_size);
 565
 566 void
 567 makeTokenHeader(const gss_OID_desc *mech,
 568                 size_t body_size,
 569                 unsigned char **buf,
 570                 enum gss_eap_token_type tok_type);
 571
 572 OM_uint32
 573 verifyTokenHeader(OM_uint32 *minor,
 574                   gss_OID mech,
 575                   size_t *body_size,
 576                   unsigned char **buf_in,
 577                   size_t toksize_in,
 578                   enum gss_eap_token_type *ret_tok_type);
 579
 580 /* Helper macros */
 581
 582 #define GSSEAP_CALLOC                   calloc
 583 #define GSSEAP_MALLOC                   malloc
 584 #define GSSEAP_FREE                     free
 585 #define GSSEAP_REALLOC                  realloc
 586
 587 #define GSSEAP_NOT_IMPLEMENTED          do {            \
 588         assert(0 && "not implemented");                 \
 589         *minor = ENOSYS;                                \
 590         return GSS_S_FAILURE;                           \
 591     } while (0)
 592
 593 #include <pthread.h>
 594
 595 #define GSSEAP_MUTEX                    pthread_mutex_t
 596 #define GSSEAP_MUTEX_INITIALIZER        PTHREAD_MUTEX_INITIALIZER
 597
 598 #define GSSEAP_MUTEX_INIT(m)            pthread_mutex_init((m), NULL)
 599 #define GSSEAP_MUTEX_DESTROY(m)         pthread_mutex_destroy((m))
 600 #define GSSEAP_MUTEX_LOCK(m)            pthread_mutex_lock((m))
 601 #define GSSEAP_MUTEX_UNLOCK(m)          pthread_mutex_unlock((m))
 602
 603 #define GSSEAP_THREAD_KEY               pthread_key_t
 604 #define GSSEAP_KEY_CREATE(k, d)         pthread_key_create((k), (d))
 605 #define GSSEAP_GETSPECIFIC(k)           pthread_getspecific((k))
 606 #define GSSEAP_SETSPECIFIC(k, d)        pthread_setspecific((k), (d))
 607
 608 #define GSSEAP_THREAD_ONCE              pthread_once_t
 609 #define GSSEAP_ONCE(o, i)               pthread_once((o), (i))
 610 #define GSSEAP_ONCE_INITIALIZER         PTHREAD_ONCE_INIT
 611
 612 /* Helper functions */
 613 static inline void
 614 store_uint16_be(uint16_t val, void *vp)
 615 {
 616     unsigned char *p = (unsigned char *)vp;
 617
 618     p[0] = (val >>  8) & 0xff;
 619     p[1] = (val      ) & 0xff;
 620 }
 621
 622 static inline uint16_t
 623 load_uint16_be(const void *cvp)
 624 {
 625     const unsigned char *p = (const unsigned char *)cvp;
 626
 627     return (p[1] | (p[0] << 8));
 628 }
 629
 630 static inline void
 631 store_uint32_be(uint32_t val, void *vp)
 632 {
 633     unsigned char *p = (unsigned char *)vp;
 634
 635     p[0] = (val >> 24) & 0xff;
 636     p[1] = (val >> 16) & 0xff;
 637     p[2] = (val >>  8) & 0xff;
 638     p[3] = (val      ) & 0xff;
 639 }
 640
 641 static inline uint32_t
 642 load_uint32_be(const void *cvp)
 643 {
 644     const unsigned char *p = (const unsigned char *)cvp;
 645
 646     return (p[3] | (p[2] << 8)
 647             | ((uint32_t) p[1] << 16)
 648             | ((uint32_t) p[0] << 24));
 649 }
 650
 651 static inline void
 652 store_uint64_be(uint64_t val, void *vp)
 653 {
 654     unsigned char *p = (unsigned char *)vp;
 655
 656     p[0] = (unsigned char)((val >> 56) & 0xff);
 657     p[1] = (unsigned char)((val >> 48) & 0xff);
 658     p[2] = (unsigned char)((val >> 40) & 0xff);
 659     p[3] = (unsigned char)((val >> 32) & 0xff);
 660     p[4] = (unsigned char)((val >> 24) & 0xff);
 661     p[5] = (unsigned char)((val >> 16) & 0xff);
 662     p[6] = (unsigned char)((val >>  8) & 0xff);
 663     p[7] = (unsigned char)((val      ) & 0xff);
 664 }
 665
 666 static inline uint64_t
 667 load_uint64_be(const void *cvp)
 668 {
 669     const unsigned char *p = (const unsigned char *)cvp;
 670
 671     return ((uint64_t)load_uint32_be(p) << 32) | load_uint32_be(p + 4);
 672 }
 673
 674 static inline unsigned char *
 675 store_buffer(gss_buffer_t buffer, void *vp, int wide_nums)
 676 {
 677     unsigned char *p = (unsigned char *)vp;
 678
 679     if (wide_nums) {
 680         store_uint64_be(buffer->length, p);
 681         p += 8;
 682     } else {
 683         store_uint32_be(buffer->length, p);
 684         p += 4;
 685     }
 686
 687     if (buffer->value != NULL) {
 688         memcpy(p, buffer->value, buffer->length);
 689         p += buffer->length;
 690     }
 691
 692     return p;
 693 }
 694
 695 static inline unsigned char *
 696 load_buffer(const void *cvp, size_t length, gss_buffer_t buffer)
 697 {
 698     buffer->length = 0;
 699     buffer->value = GSSEAP_MALLOC(length);
 700     if (buffer->value == NULL)
 701         return NULL;
 702     buffer->length = length;
 703     memcpy(buffer->value, cvp, length);
 704     return (unsigned char *)cvp + length;
 705 }
 706
 707 static inline unsigned char *
 708 store_oid(gss_OID oid, void *vp)
 709 {
 710     gss_buffer_desc buf;
 711
 712     if (oid != GSS_C_NO_OID) {
 713         buf.length = oid->length;
 714         buf.value = oid->elements;
 715     } else {
 716         buf.length = 0;
 717         buf.value = NULL;
 718     }
 719
 720     return store_buffer(&buf, vp, FALSE);
 721 }
 722
 723 static inline void
 724 krbDataToGssBuffer(krb5_data *data, gss_buffer_t buffer)
 725 {
 726     buffer->value = (void *)data->data;
 727     buffer->length = data->length;
 728 }
 729
 730 static inline void
 731 krbPrincComponentToGssBuffer(krb5_principal krbPrinc,
 732                              int index, gss_buffer_t buffer)
 733 {
 734 #ifdef HAVE_HEIMDAL_VERSION
 735     buffer->value = (void *)KRB_PRINC_NAME(krbPrinc)[index];
 736     buffer->length = strlen((char *)buffer->value);
 737 #else
 738     buffer->value = (void *)krb5_princ_component(NULL, krbPrinc, index)->data;
 739     buffer->length = krb5_princ_component(NULL, krbPrinc, index)->length;
 740 #endif /* HAVE_HEIMDAL_VERSION */
 741 }
 742
 743 static inline void
 744 krbPrincRealmToGssBuffer(krb5_principal krbPrinc, gss_buffer_t buffer)
 745 {
 746 #ifdef HAVE_HEIMDAL_VERSION
 747     buffer->value = (void *)KRB_PRINC_REALM(krbPrinc);
 748     buffer->length = strlen((char *)buffer->value);
 749 #else
 750     krbDataToGssBuffer(KRB_PRINC_REALM(krbPrinc), buffer);
 751 #endif
 752 }
 753
 754 static inline void
 755 gssBufferToKrbData(gss_buffer_t buffer, krb5_data *data)
 756 {
 757     data->data = (char *)buffer->value;
 758     data->length = buffer->length;
 759 }
 760
 761 #ifdef __cplusplus
 762 }
 763 #endif
 764
 765 #include "util_attr.h"
 766 #ifdef GSSEAP_ENABLE_REAUTH
 767 #include "util_reauth.h"
 768 #endif
 769
 770 #endif /* _UTIL_H_ */