git.oblomov.eu Git - wine/blob - dlls/secur32/schannel.c

   1 /* Copyright (C) 2005 Juan Lang
   2  * Copyright 2008 Henri Verbeet
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  *
  18  * This file implements the schannel provider, or, the SSL/TLS implementations.
  19  */
  20 #include "config.h"
  21 #include "wine/port.h"
  22
  23 #include <stdarg.h>
  24 #include <errno.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winnls.h"
  29 #include "sspi.h"
  30 #include "schannel.h"
  31 #include "secur32_priv.h"
  32 #include "wine/debug.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(secur32);
  35
  36 #if defined(SONAME_LIBGNUTLS) || defined (HAVE_SECURITY_SECURITY_H)
  37
  38 #define SCHAN_INVALID_HANDLE ~0UL
  39
  40 enum schan_handle_type
  41 {
  42     SCHAN_HANDLE_CRED,
  43     SCHAN_HANDLE_CTX,
  44     SCHAN_HANDLE_FREE
  45 };
  46
  47 struct schan_handle
  48 {
  49     void *object;
  50     enum schan_handle_type type;
  51 };
  52
  53 struct schan_credentials
  54 {
  55     ULONG credential_use;
  56     schan_imp_certificate_credentials credentials;
  57 };
  58
  59 struct schan_context
  60 {
  61     schan_imp_session session;
  62     ULONG req_ctx_attr;
  63 };
  64
  65 static struct schan_handle *schan_handle_table;
  66 static struct schan_handle *schan_free_handles;
  67 static SIZE_T schan_handle_table_size;
  68 static SIZE_T schan_handle_count;
  69
  70 static ULONG_PTR schan_alloc_handle(void *object, enum schan_handle_type type)
  71 {
  72     struct schan_handle *handle;
  73
  74     if (schan_free_handles)
  75     {
  76         DWORD index = schan_free_handles - schan_handle_table;
  77         /* Use a free handle */
  78         handle = schan_free_handles;
  79         if (handle->type != SCHAN_HANDLE_FREE)
  80         {
  81             ERR("Handle %d(%p) is in the free list, but has type %#x.\n", index, handle, handle->type);
  82             return SCHAN_INVALID_HANDLE;
  83         }
  84         schan_free_handles = handle->object;
  85         handle->object = object;
  86         handle->type = type;
  87
  88         return index;
  89     }
  90     if (!(schan_handle_count < schan_handle_table_size))
  91     {
  92         /* Grow the table */
  93         SIZE_T new_size = schan_handle_table_size + (schan_handle_table_size >> 1);
  94         struct schan_handle *new_table = HeapReAlloc(GetProcessHeap(), 0, schan_handle_table, new_size * sizeof(*schan_handle_table));
  95         if (!new_table)
  96         {
  97             ERR("Failed to grow the handle table\n");
  98             return SCHAN_INVALID_HANDLE;
  99         }
 100         schan_handle_table = new_table;
 101         schan_handle_table_size = new_size;
 102     }
 103
 104     handle = &schan_handle_table[schan_handle_count++];
 105     handle->object = object;
 106     handle->type = type;
 107
 108     return handle - schan_handle_table;
 109 }
 110
 111 static void *schan_free_handle(ULONG_PTR handle_idx, enum schan_handle_type type)
 112 {
 113     struct schan_handle *handle;
 114     void *object;
 115
 116     if (handle_idx == SCHAN_INVALID_HANDLE) return NULL;
 117     if (handle_idx >= schan_handle_count) return NULL;
 118     handle = &schan_handle_table[handle_idx];
 119     if (handle->type != type)
 120     {
 121         ERR("Handle %ld(%p) is not of type %#x\n", handle_idx, handle, type);
 122         return NULL;
 123     }
 124
 125     object = handle->object;
 126     handle->object = schan_free_handles;
 127     handle->type = SCHAN_HANDLE_FREE;
 128     schan_free_handles = handle;
 129
 130     return object;
 131 }
 132
 133 static void *schan_get_object(ULONG_PTR handle_idx, enum schan_handle_type type)
 134 {
 135     struct schan_handle *handle;
 136
 137     if (handle_idx == SCHAN_INVALID_HANDLE) return NULL;
 138     if (handle_idx >= schan_handle_count) return NULL;
 139     handle = &schan_handle_table[handle_idx];
 140     if (handle->type != type)
 141     {
 142         ERR("Handle %ld(%p) is not of type %#x\n", handle_idx, handle, type);
 143         return NULL;
 144     }
 145
 146     return handle->object;
 147 }
 148
 149 static SECURITY_STATUS schan_QueryCredentialsAttributes(
 150  PCredHandle phCredential, ULONG ulAttribute, VOID *pBuffer)
 151 {
 152     SECURITY_STATUS ret;
 153
 154     switch (ulAttribute)
 155     {
 156     case SECPKG_ATTR_SUPPORTED_ALGS:
 157         if (pBuffer)
 158         {
 159             /* FIXME: get from CryptoAPI */
 160             FIXME("SECPKG_ATTR_SUPPORTED_ALGS: stub\n");
 161             ret = SEC_E_UNSUPPORTED_FUNCTION;
 162         }
 163         else
 164             ret = SEC_E_INTERNAL_ERROR;
 165         break;
 166     case SECPKG_ATTR_CIPHER_STRENGTHS:
 167         if (pBuffer)
 168         {
 169             SecPkgCred_CipherStrengths *r = pBuffer;
 170
 171             /* FIXME: get from CryptoAPI */
 172             FIXME("SECPKG_ATTR_CIPHER_STRENGTHS: semi-stub\n");
 173             r->dwMinimumCipherStrength = 40;
 174             r->dwMaximumCipherStrength = 168;
 175             ret = SEC_E_OK;
 176         }
 177         else
 178             ret = SEC_E_INTERNAL_ERROR;
 179         break;
 180     case SECPKG_ATTR_SUPPORTED_PROTOCOLS:
 181         if (pBuffer)
 182         {
 183             /* FIXME: get from OpenSSL? */
 184             FIXME("SECPKG_ATTR_SUPPORTED_PROTOCOLS: stub\n");
 185             ret = SEC_E_UNSUPPORTED_FUNCTION;
 186         }
 187         else
 188             ret = SEC_E_INTERNAL_ERROR;
 189         break;
 190     default:
 191         ret = SEC_E_UNSUPPORTED_FUNCTION;
 192     }
 193     return ret;
 194 }
 195
 196 static SECURITY_STATUS SEC_ENTRY schan_QueryCredentialsAttributesA(
 197  PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
 198 {
 199     SECURITY_STATUS ret;
 200
 201     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
 202
 203     switch (ulAttribute)
 204     {
 205     case SECPKG_CRED_ATTR_NAMES:
 206         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
 207         ret = SEC_E_UNSUPPORTED_FUNCTION;
 208         break;
 209     default:
 210         ret = schan_QueryCredentialsAttributes(phCredential, ulAttribute,
 211          pBuffer);
 212     }
 213     return ret;
 214 }
 215
 216 static SECURITY_STATUS SEC_ENTRY schan_QueryCredentialsAttributesW(
 217  PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
 218 {
 219     SECURITY_STATUS ret;
 220
 221     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
 222
 223     switch (ulAttribute)
 224     {
 225     case SECPKG_CRED_ATTR_NAMES:
 226         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
 227         ret = SEC_E_UNSUPPORTED_FUNCTION;
 228         break;
 229     default:
 230         ret = schan_QueryCredentialsAttributes(phCredential, ulAttribute,
 231          pBuffer);
 232     }
 233     return ret;
 234 }
 235
 236 static SECURITY_STATUS schan_CheckCreds(const SCHANNEL_CRED *schanCred)
 237 {
 238     SECURITY_STATUS st;
 239     DWORD i;
 240
 241     TRACE("dwVersion = %d\n", schanCred->dwVersion);
 242     TRACE("cCreds = %d\n", schanCred->cCreds);
 243     TRACE("hRootStore = %p\n", schanCred->hRootStore);
 244     TRACE("cMappers = %d\n", schanCred->cMappers);
 245     TRACE("cSupportedAlgs = %d:\n", schanCred->cSupportedAlgs);
 246     for (i = 0; i < schanCred->cSupportedAlgs; i++)
 247         TRACE("%08x\n", schanCred->palgSupportedAlgs[i]);
 248     TRACE("grbitEnabledProtocols = %08x\n", schanCred->grbitEnabledProtocols);
 249     TRACE("dwMinimumCipherStrength = %d\n", schanCred->dwMinimumCipherStrength);
 250     TRACE("dwMaximumCipherStrength = %d\n", schanCred->dwMaximumCipherStrength);
 251     TRACE("dwSessionLifespan = %d\n", schanCred->dwSessionLifespan);
 252     TRACE("dwFlags = %08x\n", schanCred->dwFlags);
 253     TRACE("dwCredFormat = %d\n", schanCred->dwCredFormat);
 254
 255     switch (schanCred->dwVersion)
 256     {
 257     case SCH_CRED_V3:
 258     case SCHANNEL_CRED_VERSION:
 259         break;
 260     default:
 261         return SEC_E_INTERNAL_ERROR;
 262     }
 263
 264     if (schanCred->cCreds == 0)
 265         st = SEC_E_NO_CREDENTIALS;
 266     else if (schanCred->cCreds > 1)
 267         st = SEC_E_UNKNOWN_CREDENTIALS;
 268     else
 269     {
 270         DWORD keySpec;
 271         HCRYPTPROV csp;
 272         BOOL ret, freeCSP;
 273
 274         ret = CryptAcquireCertificatePrivateKey(schanCred->paCred[0],
 275          0, /* FIXME: what flags to use? */ NULL,
 276          &csp, &keySpec, &freeCSP);
 277         if (ret)
 278         {
 279             st = SEC_E_OK;
 280             if (freeCSP)
 281                 CryptReleaseContext(csp, 0);
 282         }
 283         else
 284             st = SEC_E_UNKNOWN_CREDENTIALS;
 285     }
 286     return st;
 287 }
 288
 289 static SECURITY_STATUS schan_AcquireClientCredentials(const SCHANNEL_CRED *schanCred,
 290  PCredHandle phCredential, PTimeStamp ptsExpiry)
 291 {
 292     struct schan_credentials *creds;
 293     SECURITY_STATUS st = SEC_E_OK;
 294
 295     TRACE("schanCred %p, phCredential %p, ptsExpiry %p\n", schanCred, phCredential, ptsExpiry);
 296
 297     if (schanCred)
 298     {
 299         st = schan_CheckCreds(schanCred);
 300         if (st == SEC_E_NO_CREDENTIALS)
 301             st = SEC_E_OK;
 302     }
 303
 304     /* For now, the only thing I'm interested in is the direction of the
 305      * connection, so just store it.
 306      */
 307     if (st == SEC_E_OK)
 308     {
 309         ULONG_PTR handle;
 310
 311         creds = HeapAlloc(GetProcessHeap(), 0, sizeof(*creds));
 312         if (!creds) return SEC_E_INSUFFICIENT_MEMORY;
 313
 314         handle = schan_alloc_handle(creds, SCHAN_HANDLE_CRED);
 315         if (handle == SCHAN_INVALID_HANDLE) goto fail;
 316
 317         creds->credential_use = SECPKG_CRED_OUTBOUND;
 318         if (!schan_imp_allocate_certificate_credentials(&creds->credentials))
 319         {
 320             schan_free_handle(handle, SCHAN_HANDLE_CRED);
 321             goto fail;
 322         }
 323
 324         phCredential->dwLower = handle;
 325         phCredential->dwUpper = 0;
 326
 327         /* Outbound credentials have no expiry */
 328         if (ptsExpiry)
 329         {
 330             ptsExpiry->LowPart = 0;
 331             ptsExpiry->HighPart = 0;
 332         }
 333     }
 334     return st;
 335
 336 fail:
 337     HeapFree(GetProcessHeap(), 0, creds);
 338     return SEC_E_INTERNAL_ERROR;
 339 }
 340
 341 static SECURITY_STATUS schan_AcquireServerCredentials(const SCHANNEL_CRED *schanCred,
 342  PCredHandle phCredential, PTimeStamp ptsExpiry)
 343 {
 344     SECURITY_STATUS st;
 345
 346     TRACE("schanCred %p, phCredential %p, ptsExpiry %p\n", schanCred, phCredential, ptsExpiry);
 347
 348     if (!schanCred) return SEC_E_NO_CREDENTIALS;
 349
 350     st = schan_CheckCreds(schanCred);
 351     if (st == SEC_E_OK)
 352     {
 353         ULONG_PTR handle;
 354         struct schan_credentials *creds;
 355
 356         creds = HeapAlloc(GetProcessHeap(), 0, sizeof(*creds));
 357         if (!creds) return SEC_E_INSUFFICIENT_MEMORY;
 358         creds->credential_use = SECPKG_CRED_INBOUND;
 359
 360         handle = schan_alloc_handle(creds, SCHAN_HANDLE_CRED);
 361         if (handle == SCHAN_INVALID_HANDLE)
 362         {
 363             HeapFree(GetProcessHeap(), 0, creds);
 364             return SEC_E_INTERNAL_ERROR;
 365         }
 366
 367         phCredential->dwLower = handle;
 368         phCredential->dwUpper = 0;
 369
 370         /* FIXME: get expiry from cert */
 371     }
 372     return st;
 373 }
 374
 375 static SECURITY_STATUS schan_AcquireCredentialsHandle(ULONG fCredentialUse,
 376  const SCHANNEL_CRED *schanCred, PCredHandle phCredential, PTimeStamp ptsExpiry)
 377 {
 378     SECURITY_STATUS ret;
 379
 380     if (fCredentialUse == SECPKG_CRED_OUTBOUND)
 381         ret = schan_AcquireClientCredentials(schanCred, phCredential,
 382          ptsExpiry);
 383     else
 384         ret = schan_AcquireServerCredentials(schanCred, phCredential,
 385          ptsExpiry);
 386     return ret;
 387 }
 388
 389 static SECURITY_STATUS SEC_ENTRY schan_AcquireCredentialsHandleA(
 390  SEC_CHAR *pszPrincipal, SEC_CHAR *pszPackage, ULONG fCredentialUse,
 391  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
 392  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
 393 {
 394     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 395      debugstr_a(pszPrincipal), debugstr_a(pszPackage), fCredentialUse,
 396      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 397     return schan_AcquireCredentialsHandle(fCredentialUse,
 398      pAuthData, phCredential, ptsExpiry);
 399 }
 400
 401 static SECURITY_STATUS SEC_ENTRY schan_AcquireCredentialsHandleW(
 402  SEC_WCHAR *pszPrincipal, SEC_WCHAR *pszPackage, ULONG fCredentialUse,
 403  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
 404  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
 405 {
 406     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 407      debugstr_w(pszPrincipal), debugstr_w(pszPackage), fCredentialUse,
 408      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 409     return schan_AcquireCredentialsHandle(fCredentialUse,
 410      pAuthData, phCredential, ptsExpiry);
 411 }
 412
 413 static SECURITY_STATUS SEC_ENTRY schan_FreeCredentialsHandle(
 414  PCredHandle phCredential)
 415 {
 416     struct schan_credentials *creds;
 417
 418     TRACE("phCredential %p\n", phCredential);
 419
 420     if (!phCredential) return SEC_E_INVALID_HANDLE;
 421
 422     creds = schan_free_handle(phCredential->dwLower, SCHAN_HANDLE_CRED);
 423     if (!creds) return SEC_E_INVALID_HANDLE;
 424
 425     if (creds->credential_use == SECPKG_CRED_OUTBOUND)
 426         schan_imp_free_certificate_credentials(creds->credentials);
 427     HeapFree(GetProcessHeap(), 0, creds);
 428
 429     return SEC_E_OK;
 430 }
 431
 432 static void init_schan_buffers(struct schan_buffers *s, const PSecBufferDesc desc,
 433         int (*get_next_buffer)(const struct schan_transport *, struct schan_buffers *))
 434 {
 435     s->offset = 0;
 436     s->limit = ~0UL;
 437     s->desc = desc;
 438     s->current_buffer_idx = -1;
 439     s->allow_buffer_resize = FALSE;
 440     s->get_next_buffer = get_next_buffer;
 441 }
 442
 443 static int schan_find_sec_buffer_idx(const SecBufferDesc *desc, unsigned int start_idx, ULONG buffer_type)
 444 {
 445     unsigned int i;
 446     PSecBuffer buffer;
 447
 448     for (i = start_idx; i < desc->cBuffers; ++i)
 449     {
 450         buffer = &desc->pBuffers[i];
 451         if (buffer->BufferType == buffer_type) return i;
 452     }
 453
 454     return -1;
 455 }
 456
 457 static void schan_resize_current_buffer(const struct schan_buffers *s, SIZE_T min_size)
 458 {
 459     SecBuffer *b = &s->desc->pBuffers[s->current_buffer_idx];
 460     SIZE_T new_size = b->cbBuffer ? b->cbBuffer * 2 : 128;
 461     void *new_data;
 462
 463     if (b->cbBuffer >= min_size || !s->allow_buffer_resize || min_size > UINT_MAX / 2) return;
 464
 465     while (new_size < min_size) new_size *= 2;
 466
 467     if (b->pvBuffer)
 468         new_data = HeapReAlloc(GetProcessHeap(), 0, b->pvBuffer, new_size);
 469     else
 470         new_data = HeapAlloc(GetProcessHeap(), 0, new_size);
 471
 472     if (!new_data)
 473     {
 474         TRACE("Failed to resize %p from %d to %ld\n", b->pvBuffer, b->cbBuffer, new_size);
 475         return;
 476     }
 477
 478     b->cbBuffer = new_size;
 479     b->pvBuffer = new_data;
 480 }
 481
 482 char *schan_get_buffer(const struct schan_transport *t, struct schan_buffers *s, SIZE_T *count)
 483 {
 484     SIZE_T max_count;
 485     PSecBuffer buffer;
 486
 487     if (!s->desc)
 488     {
 489         TRACE("No desc\n");
 490         return NULL;
 491     }
 492
 493     if (s->current_buffer_idx == -1)
 494     {
 495         /* Initial buffer */
 496         int buffer_idx = s->get_next_buffer(t, s);
 497         if (buffer_idx == -1)
 498         {
 499             TRACE("No next buffer\n");
 500             return NULL;
 501         }
 502         s->current_buffer_idx = buffer_idx;
 503     }
 504
 505     buffer = &s->desc->pBuffers[s->current_buffer_idx];
 506     TRACE("Using buffer %d: cbBuffer %d, BufferType %#x, pvBuffer %p\n", s->current_buffer_idx, buffer->cbBuffer, buffer->BufferType, buffer->pvBuffer);
 507
 508     schan_resize_current_buffer(s, s->offset + *count);
 509     max_count = buffer->cbBuffer - s->offset;
 510     if (s->limit != ~0UL && s->limit < max_count)
 511         max_count = s->limit;
 512     if (!max_count)
 513     {
 514         int buffer_idx;
 515
 516         s->allow_buffer_resize = FALSE;
 517         buffer_idx = s->get_next_buffer(t, s);
 518         if (buffer_idx == -1)
 519         {
 520             TRACE("No next buffer\n");
 521             return NULL;
 522         }
 523         s->current_buffer_idx = buffer_idx;
 524         s->offset = 0;
 525         return schan_get_buffer(t, s, count);
 526     }
 527
 528     if (*count > max_count)
 529         *count = max_count;
 530     if (s->limit != ~0UL)
 531         s->limit -= *count;
 532
 533     return (char *)buffer->pvBuffer + s->offset;
 534 }
 535
 536 /* schan_pull
 537  *      Read data from the transport input buffer.
 538  *
 539  * t - The session transport object.
 540  * buff - The buffer into which to store the read data.  Must be at least
 541  *        *buff_len bytes in length.
 542  * buff_len - On input, *buff_len is the desired length to read.  On successful
 543  *            return, *buff_len is the number of bytes actually read.
 544  *
 545  * Returns:
 546  *  0 on success, in which case:
 547  *      *buff_len == 0 indicates end of file.
 548  *      *buff_len > 0 indicates that some data was read.  May be less than
 549  *          what was requested, in which case the caller should call again if/
 550  *          when they want more.
 551  *  EAGAIN when no data could be read without blocking
 552  *  another errno-style error value on failure
 553  *
 554  */
 555 int schan_pull(struct schan_transport *t, void *buff, size_t *buff_len)
 556 {
 557     char *b;
 558     SIZE_T local_len = *buff_len;
 559
 560     TRACE("Pull %lu bytes\n", local_len);
 561
 562     *buff_len = 0;
 563
 564     b = schan_get_buffer(t, &t->in, &local_len);
 565     if (!b)
 566         return EAGAIN;
 567
 568     memcpy(buff, b, local_len);
 569     t->in.offset += local_len;
 570
 571     TRACE("Read %lu bytes\n", local_len);
 572
 573     *buff_len = local_len;
 574     return 0;
 575 }
 576
 577 /* schan_push
 578  *      Write data to the transport output buffer.
 579  *
 580  * t - The session transport object.
 581  * buff - The buffer of data to write.  Must be at least *buff_len bytes in length.
 582  * buff_len - On input, *buff_len is the desired length to write.  On successful
 583  *            return, *buff_len is the number of bytes actually written.
 584  *
 585  * Returns:
 586  *  0 on success
 587  *      *buff_len will be > 0 indicating how much data was written.  May be less
 588  *          than what was requested, in which case the caller should call again
 589             if/when they want to write more.
 590  *  EAGAIN when no data could be written without blocking
 591  *  another errno-style error value on failure
 592  *
 593  */
 594 int schan_push(struct schan_transport *t, const void *buff, size_t *buff_len)
 595 {
 596     char *b;
 597     SIZE_T local_len = *buff_len;
 598
 599     TRACE("Push %lu bytes\n", local_len);
 600
 601     *buff_len = 0;
 602
 603     b = schan_get_buffer(t, &t->out, &local_len);
 604     if (!b)
 605         return EAGAIN;
 606
 607     memcpy(b, buff, local_len);
 608     t->out.offset += local_len;
 609
 610     TRACE("Wrote %lu bytes\n", local_len);
 611
 612     *buff_len = local_len;
 613     return 0;
 614 }
 615
 616 schan_imp_session schan_session_for_transport(struct schan_transport* t)
 617 {
 618     return t->ctx->session;
 619 }
 620
 621 static int schan_init_sec_ctx_get_next_buffer(const struct schan_transport *t, struct schan_buffers *s)
 622 {
 623     if (s->current_buffer_idx == -1)
 624     {
 625         int idx = schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN);
 626         if (t->ctx->req_ctx_attr & ISC_REQ_ALLOCATE_MEMORY)
 627         {
 628             if (idx == -1)
 629             {
 630                 idx = schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_EMPTY);
 631                 if (idx != -1) s->desc->pBuffers[idx].BufferType = SECBUFFER_TOKEN;
 632             }
 633             if (idx != -1 && !s->desc->pBuffers[idx].pvBuffer)
 634             {
 635                 s->desc->pBuffers[idx].cbBuffer = 0;
 636                 s->allow_buffer_resize = TRUE;
 637             }
 638         }
 639         return idx;
 640     }
 641
 642     return -1;
 643 }
 644
 645 static void dump_buffer_desc(SecBufferDesc *desc)
 646 {
 647     unsigned int i;
 648
 649     if (!desc) return;
 650     TRACE("Buffer desc %p:\n", desc);
 651     for (i = 0; i < desc->cBuffers; ++i)
 652     {
 653         SecBuffer *b = &desc->pBuffers[i];
 654         TRACE("\tbuffer %u: cbBuffer %d, BufferType %#x pvBuffer %p\n", i, b->cbBuffer, b->BufferType, b->pvBuffer);
 655     }
 656 }
 657
 658 /***********************************************************************
 659  *              InitializeSecurityContextW
 660  */
 661 static SECURITY_STATUS SEC_ENTRY schan_InitializeSecurityContextW(
 662  PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName,
 663  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 664  PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
 665  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 666 {
 667     struct schan_context *ctx;
 668     struct schan_buffers *out_buffers;
 669     struct schan_credentials *cred;
 670     struct schan_transport transport;
 671     SECURITY_STATUS ret;
 672
 673     TRACE("%p %p %s 0x%08x %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 674      debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 675      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 676
 677     dump_buffer_desc(pInput);
 678     dump_buffer_desc(pOutput);
 679
 680     if (!phContext)
 681     {
 682         ULONG_PTR handle;
 683
 684         if (!phCredential) return SEC_E_INVALID_HANDLE;
 685
 686         cred = schan_get_object(phCredential->dwLower, SCHAN_HANDLE_CRED);
 687         if (!cred) return SEC_E_INVALID_HANDLE;
 688
 689         if (!(cred->credential_use & SECPKG_CRED_OUTBOUND))
 690         {
 691             WARN("Invalid credential use %#x\n", cred->credential_use);
 692             return SEC_E_INVALID_HANDLE;
 693         }
 694
 695         ctx = HeapAlloc(GetProcessHeap(), 0, sizeof(*ctx));
 696         if (!ctx) return SEC_E_INSUFFICIENT_MEMORY;
 697
 698         handle = schan_alloc_handle(ctx, SCHAN_HANDLE_CTX);
 699         if (handle == SCHAN_INVALID_HANDLE)
 700         {
 701             HeapFree(GetProcessHeap(), 0, ctx);
 702             return SEC_E_INTERNAL_ERROR;
 703         }
 704
 705         if (!schan_imp_create_session(&ctx->session, FALSE, cred->credentials))
 706         {
 707             schan_free_handle(handle, SCHAN_HANDLE_CTX);
 708             HeapFree(GetProcessHeap(), 0, ctx);
 709             return SEC_E_INTERNAL_ERROR;
 710         }
 711
 712         phNewContext->dwLower = handle;
 713         phNewContext->dwUpper = 0;
 714     }
 715     else
 716     {
 717         ctx = schan_get_object(phContext->dwLower, SCHAN_HANDLE_CTX);
 718     }
 719
 720     ctx->req_ctx_attr = fContextReq;
 721
 722     transport.ctx = ctx;
 723     init_schan_buffers(&transport.in, pInput, schan_init_sec_ctx_get_next_buffer);
 724     init_schan_buffers(&transport.out, pOutput, schan_init_sec_ctx_get_next_buffer);
 725     schan_imp_set_session_transport(ctx->session, &transport);
 726
 727     /* Perform the TLS handshake */
 728     ret = schan_imp_handshake(ctx->session);
 729
 730     if(transport.in.offset && transport.in.offset != pInput->pBuffers[0].cbBuffer) {
 731         if(pInput->cBuffers<2 || pInput->pBuffers[1].BufferType!=SECBUFFER_EMPTY)
 732             return SEC_E_INVALID_TOKEN;
 733
 734         pInput->pBuffers[1].BufferType = SECBUFFER_EXTRA;
 735         pInput->pBuffers[1].cbBuffer = pInput->pBuffers[0].cbBuffer-transport.in.offset;
 736     }
 737
 738     out_buffers = &transport.out;
 739     if (out_buffers->current_buffer_idx != -1)
 740     {
 741         SecBuffer *buffer = &out_buffers->desc->pBuffers[out_buffers->current_buffer_idx];
 742         buffer->cbBuffer = out_buffers->offset;
 743     }
 744
 745     *pfContextAttr = 0;
 746     if (ctx->req_ctx_attr & ISC_REQ_ALLOCATE_MEMORY)
 747         *pfContextAttr |= ISC_RET_ALLOCATED_MEMORY;
 748
 749     return ret;
 750 }
 751
 752 /***********************************************************************
 753  *              InitializeSecurityContextA
 754  */
 755 static SECURITY_STATUS SEC_ENTRY schan_InitializeSecurityContextA(
 756  PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
 757  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 758  PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
 759  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 760 {
 761     SECURITY_STATUS ret;
 762     SEC_WCHAR *target_name = NULL;
 763
 764     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 765      debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 766      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 767
 768     if (pszTargetName)
 769     {
 770         INT len = MultiByteToWideChar(CP_ACP, 0, pszTargetName, -1, NULL, 0);
 771         target_name = HeapAlloc(GetProcessHeap(), 0, len * sizeof(*target_name));
 772         MultiByteToWideChar(CP_ACP, 0, pszTargetName, -1, target_name, len);
 773     }
 774
 775     ret = schan_InitializeSecurityContextW(phCredential, phContext, target_name,
 776             fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
 777             phNewContext, pOutput, pfContextAttr, ptsExpiry);
 778
 779     HeapFree(GetProcessHeap(), 0, target_name);
 780
 781     return ret;
 782 }
 783
 784 static SECURITY_STATUS SEC_ENTRY schan_QueryContextAttributesW(
 785         PCtxtHandle context_handle, ULONG attribute, PVOID buffer)
 786 {
 787     struct schan_context *ctx;
 788
 789     TRACE("context_handle %p, attribute %#x, buffer %p\n",
 790             context_handle, attribute, buffer);
 791
 792     if (!context_handle) return SEC_E_INVALID_HANDLE;
 793     ctx = schan_get_object(context_handle->dwLower, SCHAN_HANDLE_CTX);
 794
 795     switch(attribute)
 796     {
 797         case SECPKG_ATTR_STREAM_SIZES:
 798         {
 799             SecPkgContext_ConnectionInfo info;
 800             SECURITY_STATUS status = schan_imp_get_connection_info(ctx->session, &info);
 801             if (status == SEC_E_OK)
 802             {
 803                 SecPkgContext_StreamSizes *stream_sizes = buffer;
 804                 SIZE_T mac_size = info.dwHashStrength;
 805                 unsigned int block_size = schan_imp_get_session_cipher_block_size(ctx->session);
 806                 unsigned int message_size = schan_imp_get_max_message_size(ctx->session);
 807
 808                 TRACE("Using %lu mac bytes, message size %u, block size %u\n",
 809                         mac_size, message_size, block_size);
 810
 811                 /* These are defined by the TLS RFC */
 812                 stream_sizes->cbHeader = 5;
 813                 stream_sizes->cbTrailer = mac_size + 256; /* Max 255 bytes padding + 1 for padding size */
 814                 stream_sizes->cbMaximumMessage = message_size;
 815                 stream_sizes->cbBuffers = 4;
 816                 stream_sizes->cbBlockSize = block_size;
 817             }
 818
 819             return status;
 820         }
 821         case SECPKG_ATTR_REMOTE_CERT_CONTEXT:
 822         {
 823             PCCERT_CONTEXT *cert = buffer;
 824             return schan_imp_get_session_peer_certificate(ctx->session, cert);
 825         }
 826         case SECPKG_ATTR_CONNECTION_INFO:
 827         {
 828             SecPkgContext_ConnectionInfo *info = buffer;
 829             return schan_imp_get_connection_info(ctx->session, info);
 830         }
 831
 832         default:
 833             FIXME("Unhandled attribute %#x\n", attribute);
 834             return SEC_E_UNSUPPORTED_FUNCTION;
 835     }
 836 }
 837
 838 static SECURITY_STATUS SEC_ENTRY schan_QueryContextAttributesA(
 839         PCtxtHandle context_handle, ULONG attribute, PVOID buffer)
 840 {
 841     TRACE("context_handle %p, attribute %#x, buffer %p\n",
 842             context_handle, attribute, buffer);
 843
 844     switch(attribute)
 845     {
 846         case SECPKG_ATTR_STREAM_SIZES:
 847             return schan_QueryContextAttributesW(context_handle, attribute, buffer);
 848         case SECPKG_ATTR_REMOTE_CERT_CONTEXT:
 849             return schan_QueryContextAttributesW(context_handle, attribute, buffer);
 850         case SECPKG_ATTR_CONNECTION_INFO:
 851             return schan_QueryContextAttributesW(context_handle, attribute, buffer);
 852
 853         default:
 854             FIXME("Unhandled attribute %#x\n", attribute);
 855             return SEC_E_UNSUPPORTED_FUNCTION;
 856     }
 857 }
 858
 859 static int schan_encrypt_message_get_next_buffer(const struct schan_transport *t, struct schan_buffers *s)
 860 {
 861     SecBuffer *b;
 862
 863     if (s->current_buffer_idx == -1)
 864         return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_STREAM_HEADER);
 865
 866     b = &s->desc->pBuffers[s->current_buffer_idx];
 867
 868     if (b->BufferType == SECBUFFER_STREAM_HEADER)
 869         return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_DATA);
 870
 871     if (b->BufferType == SECBUFFER_DATA)
 872         return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_STREAM_TRAILER);
 873
 874     return -1;
 875 }
 876
 877 static int schan_encrypt_message_get_next_buffer_token(const struct schan_transport *t, struct schan_buffers *s)
 878 {
 879     SecBuffer *b;
 880
 881     if (s->current_buffer_idx == -1)
 882         return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN);
 883
 884     b = &s->desc->pBuffers[s->current_buffer_idx];
 885
 886     if (b->BufferType == SECBUFFER_TOKEN)
 887     {
 888         int idx = schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN);
 889         if (idx != s->current_buffer_idx) return -1;
 890         return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_DATA);
 891     }
 892
 893     if (b->BufferType == SECBUFFER_DATA)
 894     {
 895         int idx = schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN);
 896         if (idx != -1)
 897             idx = schan_find_sec_buffer_idx(s->desc, idx + 1, SECBUFFER_TOKEN);
 898         return idx;
 899     }
 900
 901     return -1;
 902 }
 903
 904 static SECURITY_STATUS SEC_ENTRY schan_EncryptMessage(PCtxtHandle context_handle,
 905         ULONG quality, PSecBufferDesc message, ULONG message_seq_no)
 906 {
 907     struct schan_transport transport;
 908     struct schan_context *ctx;
 909     struct schan_buffers *b;
 910     SECURITY_STATUS status;
 911     SecBuffer *buffer;
 912     SIZE_T data_size;
 913     SIZE_T length;
 914     char *data;
 915     int idx;
 916
 917     TRACE("context_handle %p, quality %d, message %p, message_seq_no %d\n",
 918             context_handle, quality, message, message_seq_no);
 919
 920     if (!context_handle) return SEC_E_INVALID_HANDLE;
 921     ctx = schan_get_object(context_handle->dwLower, SCHAN_HANDLE_CTX);
 922
 923     dump_buffer_desc(message);
 924
 925     idx = schan_find_sec_buffer_idx(message, 0, SECBUFFER_DATA);
 926     if (idx == -1)
 927     {
 928         WARN("No data buffer passed\n");
 929         return SEC_E_INTERNAL_ERROR;
 930     }
 931     buffer = &message->pBuffers[idx];
 932
 933     data_size = buffer->cbBuffer;
 934     data = HeapAlloc(GetProcessHeap(), 0, data_size);
 935     memcpy(data, buffer->pvBuffer, data_size);
 936
 937     transport.ctx = ctx;
 938     init_schan_buffers(&transport.in, NULL, NULL);
 939     if (schan_find_sec_buffer_idx(message, 0, SECBUFFER_STREAM_HEADER) != -1)
 940         init_schan_buffers(&transport.out, message, schan_encrypt_message_get_next_buffer);
 941     else
 942         init_schan_buffers(&transport.out, message, schan_encrypt_message_get_next_buffer_token);
 943     schan_imp_set_session_transport(ctx->session, &transport);
 944
 945     length = data_size;
 946     status = schan_imp_send(ctx->session, data, &length);
 947
 948     TRACE("Sent %ld bytes.\n", length);
 949
 950     if (length != data_size)
 951         status = SEC_E_INTERNAL_ERROR;
 952
 953     b = &transport.out;
 954     b->desc->pBuffers[b->current_buffer_idx].cbBuffer = b->offset;
 955     HeapFree(GetProcessHeap(), 0, data);
 956
 957     TRACE("Returning %#x.\n", status);
 958
 959     return status;
 960 }
 961
 962 static int schan_decrypt_message_get_next_buffer(const struct schan_transport *t, struct schan_buffers *s)
 963 {
 964     if (s->current_buffer_idx == -1)
 965         return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_DATA);
 966
 967     return -1;
 968 }
 969
 970 static int schan_validate_decrypt_buffer_desc(PSecBufferDesc message)
 971 {
 972     int data_idx = -1;
 973     unsigned int empty_count = 0;
 974     unsigned int i;
 975
 976     if (message->cBuffers < 4)
 977     {
 978         WARN("Less than four buffers passed\n");
 979         return -1;
 980     }
 981
 982     for (i = 0; i < message->cBuffers; ++i)
 983     {
 984         SecBuffer *b = &message->pBuffers[i];
 985         if (b->BufferType == SECBUFFER_DATA)
 986         {
 987             if (data_idx != -1)
 988             {
 989                 WARN("More than one data buffer passed\n");
 990                 return -1;
 991             }
 992             data_idx = i;
 993         }
 994         else if (b->BufferType == SECBUFFER_EMPTY)
 995             ++empty_count;
 996     }
 997
 998     if (data_idx == -1)
 999     {
1000         WARN("No data buffer passed\n");
1001         return -1;
1002     }
1003
1004     if (empty_count < 3)
1005     {
1006         WARN("Less than three empty buffers passed\n");
1007         return -1;
1008     }
1009
1010     return data_idx;
1011 }
1012
1013 static void schan_decrypt_fill_buffer(PSecBufferDesc message, ULONG buffer_type, void *data, ULONG size)
1014 {
1015     int idx;
1016     SecBuffer *buffer;
1017
1018     idx = schan_find_sec_buffer_idx(message, 0, SECBUFFER_EMPTY);
1019     buffer = &message->pBuffers[idx];
1020
1021     buffer->BufferType = buffer_type;
1022     buffer->pvBuffer = data;
1023     buffer->cbBuffer = size;
1024 }
1025
1026 static SECURITY_STATUS SEC_ENTRY schan_DecryptMessage(PCtxtHandle context_handle,
1027         PSecBufferDesc message, ULONG message_seq_no, PULONG quality)
1028 {
1029     struct schan_transport transport;
1030     struct schan_context *ctx;
1031     SecBuffer *buffer;
1032     SIZE_T data_size;
1033     char *data;
1034     unsigned expected_size;
1035     SSIZE_T received = 0;
1036     int idx;
1037     unsigned char *buf_ptr;
1038
1039     TRACE("context_handle %p, message %p, message_seq_no %d, quality %p\n",
1040             context_handle, message, message_seq_no, quality);
1041
1042     if (!context_handle) return SEC_E_INVALID_HANDLE;
1043     ctx = schan_get_object(context_handle->dwLower, SCHAN_HANDLE_CTX);
1044
1045     dump_buffer_desc(message);
1046
1047     idx = schan_validate_decrypt_buffer_desc(message);
1048     if (idx == -1)
1049         return SEC_E_INVALID_TOKEN;
1050     buffer = &message->pBuffers[idx];
1051     buf_ptr = buffer->pvBuffer;
1052
1053     expected_size = 5 + ((buf_ptr[3] << 8) | buf_ptr[4]);
1054     if(buffer->cbBuffer < expected_size)
1055     {
1056         TRACE("Expected %u bytes, but buffer only contains %u bytes\n", expected_size, buffer->cbBuffer);
1057         buffer->BufferType = SECBUFFER_MISSING;
1058         buffer->cbBuffer = expected_size - buffer->cbBuffer;
1059
1060         /* This is a bit weird, but windows does it too */
1061         idx = schan_find_sec_buffer_idx(message, 0, SECBUFFER_EMPTY);
1062         buffer = &message->pBuffers[idx];
1063         buffer->BufferType = SECBUFFER_MISSING;
1064         buffer->cbBuffer = expected_size - buffer->cbBuffer;
1065
1066         TRACE("Returning SEC_E_INCOMPLETE_MESSAGE\n");
1067         return SEC_E_INCOMPLETE_MESSAGE;
1068     }
1069
1070     data_size = buffer->cbBuffer;
1071     data = HeapAlloc(GetProcessHeap(), 0, data_size);
1072
1073     transport.ctx = ctx;
1074     init_schan_buffers(&transport.in, message, schan_decrypt_message_get_next_buffer);
1075     transport.in.limit = expected_size;
1076     init_schan_buffers(&transport.out, NULL, NULL);
1077     schan_imp_set_session_transport(ctx->session, &transport);
1078
1079     while (received < data_size)
1080     {
1081         SIZE_T length = data_size - received;
1082         SECURITY_STATUS status = schan_imp_recv(ctx->session, data + received, &length);
1083         if (status == SEC_I_CONTINUE_NEEDED)
1084         {
1085             if (!received)
1086             {
1087                 HeapFree(GetProcessHeap(), 0, data);
1088                 TRACE("Returning SEC_E_INCOMPLETE_MESSAGE\n");
1089                 return SEC_E_INCOMPLETE_MESSAGE;
1090             }
1091             break;
1092         }
1093         else if (status != SEC_E_OK)
1094         {
1095             HeapFree(GetProcessHeap(), 0, data);
1096             ERR("Returning %d\n", status);
1097             return status;
1098         }
1099         else if (!length)
1100             break;
1101
1102         received += length;
1103     }
1104
1105     TRACE("Received %ld bytes\n", received);
1106
1107     memcpy(buf_ptr + 5, data, received);
1108     HeapFree(GetProcessHeap(), 0, data);
1109
1110     schan_decrypt_fill_buffer(message, SECBUFFER_DATA,
1111         buf_ptr + 5, received);
1112
1113     schan_decrypt_fill_buffer(message, SECBUFFER_STREAM_TRAILER,
1114         buf_ptr + 5 + received, buffer->cbBuffer - 5 - received);
1115
1116     if(buffer->cbBuffer > expected_size)
1117         schan_decrypt_fill_buffer(message, SECBUFFER_EXTRA,
1118             buf_ptr + expected_size, buffer->cbBuffer - expected_size);
1119
1120     buffer->BufferType = SECBUFFER_STREAM_HEADER;
1121     buffer->cbBuffer = 5;
1122
1123     return SEC_E_OK;
1124 }
1125
1126 static SECURITY_STATUS SEC_ENTRY schan_DeleteSecurityContext(PCtxtHandle context_handle)
1127 {
1128     struct schan_context *ctx;
1129
1130     TRACE("context_handle %p\n", context_handle);
1131
1132     if (!context_handle) return SEC_E_INVALID_HANDLE;
1133
1134     ctx = schan_free_handle(context_handle->dwLower, SCHAN_HANDLE_CTX);
1135     if (!ctx) return SEC_E_INVALID_HANDLE;
1136
1137     schan_imp_dispose_session(ctx->session);
1138     HeapFree(GetProcessHeap(), 0, ctx);
1139
1140     return SEC_E_OK;
1141 }
1142
1143 static const SecurityFunctionTableA schanTableA = {
1144     1,
1145     NULL, /* EnumerateSecurityPackagesA */
1146     schan_QueryCredentialsAttributesA,
1147     schan_AcquireCredentialsHandleA,
1148     schan_FreeCredentialsHandle,
1149     NULL, /* Reserved2 */
1150     schan_InitializeSecurityContextA,
1151     NULL, /* AcceptSecurityContext */
1152     NULL, /* CompleteAuthToken */
1153     schan_DeleteSecurityContext,
1154     NULL, /* ApplyControlToken */
1155     schan_QueryContextAttributesA,
1156     NULL, /* ImpersonateSecurityContext */
1157     NULL, /* RevertSecurityContext */
1158     NULL, /* MakeSignature */
1159     NULL, /* VerifySignature */
1160     FreeContextBuffer,
1161     NULL, /* QuerySecurityPackageInfoA */
1162     NULL, /* Reserved3 */
1163     NULL, /* Reserved4 */
1164     NULL, /* ExportSecurityContext */
1165     NULL, /* ImportSecurityContextA */
1166     NULL, /* AddCredentialsA */
1167     NULL, /* Reserved8 */
1168     NULL, /* QuerySecurityContextToken */
1169     schan_EncryptMessage,
1170     schan_DecryptMessage,
1171     NULL, /* SetContextAttributesA */
1172 };
1173
1174 static const SecurityFunctionTableW schanTableW = {
1175     1,
1176     NULL, /* EnumerateSecurityPackagesW */
1177     schan_QueryCredentialsAttributesW,
1178     schan_AcquireCredentialsHandleW,
1179     schan_FreeCredentialsHandle,
1180     NULL, /* Reserved2 */
1181     schan_InitializeSecurityContextW,
1182     NULL, /* AcceptSecurityContext */
1183     NULL, /* CompleteAuthToken */
1184     schan_DeleteSecurityContext,
1185     NULL, /* ApplyControlToken */
1186     schan_QueryContextAttributesW,
1187     NULL, /* ImpersonateSecurityContext */
1188     NULL, /* RevertSecurityContext */
1189     NULL, /* MakeSignature */
1190     NULL, /* VerifySignature */
1191     FreeContextBuffer,
1192     NULL, /* QuerySecurityPackageInfoW */
1193     NULL, /* Reserved3 */
1194     NULL, /* Reserved4 */
1195     NULL, /* ExportSecurityContext */
1196     NULL, /* ImportSecurityContextW */
1197     NULL, /* AddCredentialsW */
1198     NULL, /* Reserved8 */
1199     NULL, /* QuerySecurityContextToken */
1200     schan_EncryptMessage,
1201     schan_DecryptMessage,
1202     NULL, /* SetContextAttributesW */
1203 };
1204
1205 static const WCHAR schannelComment[] = { 'S','c','h','a','n','n','e','l',' ',
1206  'S','e','c','u','r','i','t','y',' ','P','a','c','k','a','g','e',0 };
1207 static const WCHAR schannelDllName[] = { 's','c','h','a','n','n','e','l','.','d','l','l',0 };
1208
1209 void SECUR32_initSchannelSP(void)
1210 {
1211     /* This is what Windows reports.  This shouldn't break any applications
1212      * even though the functions are missing, because the wrapper will
1213      * return SEC_E_UNSUPPORTED_FUNCTION if our function is NULL.
1214      */
1215     static const LONG caps =
1216         SECPKG_FLAG_INTEGRITY |
1217         SECPKG_FLAG_PRIVACY |
1218         SECPKG_FLAG_CONNECTION |
1219         SECPKG_FLAG_MULTI_REQUIRED |
1220         SECPKG_FLAG_EXTENDED_ERROR |
1221         SECPKG_FLAG_IMPERSONATION |
1222         SECPKG_FLAG_ACCEPT_WIN32_NAME |
1223         SECPKG_FLAG_STREAM;
1224     static const short version = 1;
1225     static const LONG maxToken = 16384;
1226     SEC_WCHAR *uniSPName = (SEC_WCHAR *)UNISP_NAME_W,
1227               *schannel = (SEC_WCHAR *)SCHANNEL_NAME_W;
1228     const SecPkgInfoW info[] = {
1229         { caps, version, UNISP_RPC_ID, maxToken, uniSPName, uniSPName },
1230         { caps, version, UNISP_RPC_ID, maxToken, schannel,
1231             (SEC_WCHAR *)schannelComment },
1232     };
1233     SecureProvider *provider;
1234
1235     if (!schan_imp_init())
1236         return;
1237
1238     schan_handle_table = HeapAlloc(GetProcessHeap(), 0, 64 * sizeof(*schan_handle_table));
1239     if (!schan_handle_table)
1240     {
1241         ERR("Failed to allocate schannel handle table.\n");
1242         goto fail;
1243     }
1244     schan_handle_table_size = 64;
1245
1246     provider = SECUR32_addProvider(&schanTableA, &schanTableW, schannelDllName);
1247     if (!provider)
1248     {
1249         ERR("Failed to add schannel provider.\n");
1250         goto fail;
1251     }
1252
1253     SECUR32_addPackages(provider, sizeof(info) / sizeof(info[0]), NULL, info);
1254
1255     return;
1256
1257 fail:
1258     HeapFree(GetProcessHeap(), 0, schan_handle_table);
1259     schan_handle_table = NULL;
1260     schan_imp_deinit();
1261     return;
1262 }
1263
1264 void SECUR32_deinitSchannelSP(void)
1265 {
1266     SIZE_T i = schan_handle_count;
1267
1268     if (!schan_handle_table) return;
1269
1270     /* deinitialized sessions first because a pointer to the credentials
1271      * may be stored for the session. */
1272     while (i--)
1273     {
1274         if (schan_handle_table[i].type == SCHAN_HANDLE_CTX)
1275         {
1276             struct schan_context *ctx = schan_free_handle(i, SCHAN_HANDLE_CTX);
1277             schan_imp_dispose_session(ctx->session);
1278             HeapFree(GetProcessHeap(), 0, ctx);
1279         }
1280     }
1281     i = schan_handle_count;
1282     while (i--)
1283     {
1284         if (schan_handle_table[i].type != SCHAN_HANDLE_FREE)
1285         {
1286             struct schan_credentials *cred;
1287             cred = schan_free_handle(i, SCHAN_HANDLE_CRED);
1288             schan_imp_free_certificate_credentials(cred->credentials);
1289             HeapFree(GetProcessHeap(), 0, cred);
1290         }
1291     }
1292     HeapFree(GetProcessHeap(), 0, schan_handle_table);
1293     schan_imp_deinit();
1294 }
1295
1296 #else /* SONAME_LIBGNUTLS || HAVE_SECURITY_SECURITY_H */
1297
1298 void SECUR32_initSchannelSP(void)
1299 {
1300     ERR("TLS library not found, SSL connections will fail\n");
1301 }
1302
1303 void SECUR32_deinitSchannelSP(void) {}
1304
1305 #endif /* SONAME_LIBGNUTLS || HAVE_SECURITY_SECURITY_H */