dlls/secur32/schannel_macosx.c

   1 /*
   2  * Mac OS X Secure Transport implementation of the schannel (SSL/TLS) provider.
   3  *
   4  * Copyright 2005 Juan Lang
   5  * Copyright 2008 Henri Verbeet
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdarg.h>
  26 #ifdef HAVE_SECURITY_SECURITY_H
  27 #include <Security/Security.h>
  28 #define GetCurrentThread GetCurrentThread_Mac
  29 #define LoadResource LoadResource_Mac
  30 #include <CoreServices/CoreServices.h>
  31 #undef GetCurrentThread
  32 #undef LoadResource
  33 #undef DPRINTF
  34 #endif
  35
  36 #include "windef.h"
  37 #include "winbase.h"
  38 #include "sspi.h"
  39 #include "schannel.h"
  40 #include "secur32_priv.h"
  41 #include "wine/debug.h"
  42 #include "wine/library.h"
  43
  44 WINE_DEFAULT_DEBUG_CHANNEL(secur32);
  45
  46 #ifdef HAVE_SECURITY_SECURITY_H
  47
  48 struct mac_session {
  49     SSLContextRef context;
  50     struct schan_transport *transport;
  51 };
  52
  53
  54 enum {
  55     schan_proto_SSL,
  56     schan_proto_TLS,
  57 };
  58
  59 enum {
  60     schan_kx_DH_anon_EXPORT,
  61     schan_kx_DH_anon,
  62     schan_kx_DH_DSS_EXPORT,
  63     schan_kx_DH_DSS,
  64     schan_kx_DH_RSA_EXPORT,
  65     schan_kx_DH_RSA,
  66     schan_kx_DHE_DSS_EXPORT,
  67     schan_kx_DHE_DSS,
  68     schan_kx_DHE_RSA_EXPORT,
  69     schan_kx_DHE_RSA,
  70     schan_kx_ECDH_anon,
  71     schan_kx_ECDH_ECDSA,
  72     schan_kx_ECDH_RSA,
  73     schan_kx_ECDHE_ECDSA,
  74     schan_kx_ECDHE_RSA,
  75     schan_kx_FORTEZZA_DMS,
  76     schan_kx_NULL,
  77     schan_kx_RSA_EXPORT,
  78     schan_kx_RSA,
  79 };
  80
  81 enum {
  82     schan_enc_3DES_EDE_CBC,
  83     schan_enc_AES_128_CBC,
  84     schan_enc_AES_256_CBC,
  85     schan_enc_DES_CBC,
  86     schan_enc_DES40_CBC,
  87     schan_enc_FORTEZZA_CBC,
  88     schan_enc_IDEA_CBC,
  89     schan_enc_NULL,
  90     schan_enc_RC2_CBC,
  91     schan_enc_RC2_CBC_40,
  92     schan_enc_RC4_128,
  93     schan_enc_RC4_40,
  94 };
  95
  96 enum {
  97     schan_mac_MD5,
  98     schan_mac_NULL,
  99     schan_mac_SHA,
 100 };
 101
 102
 103 struct cipher_suite {
 104     SSLCipherSuite suite;
 105     int protocol;
 106     int kx_alg;
 107     int enc_alg;
 108     int mac_alg;
 109 };
 110
 111 /* This table corresponds to the enum in <Security/CipherSuite.h>. */
 112 static const struct cipher_suite cipher_suites[] = {
 113 #define CIPHER_SUITE(p, kx, enc, mac) { p##_##kx##_WITH_##enc##_##mac, schan_proto_##p, \
 114                                         schan_kx_##kx, schan_enc_##enc, schan_mac_##mac }
 115     CIPHER_SUITE(SSL, RSA, NULL, MD5),
 116     CIPHER_SUITE(SSL, RSA, NULL, MD5),
 117     CIPHER_SUITE(SSL, RSA, NULL, SHA),
 118     CIPHER_SUITE(SSL, RSA_EXPORT, RC4_40, MD5),
 119     CIPHER_SUITE(SSL, RSA, RC4_128, MD5),
 120     CIPHER_SUITE(SSL, RSA, RC4_128, SHA),
 121     CIPHER_SUITE(SSL, RSA_EXPORT, RC2_CBC_40, MD5),
 122     CIPHER_SUITE(SSL, RSA, IDEA_CBC, SHA),
 123     CIPHER_SUITE(SSL, RSA_EXPORT, DES40_CBC, SHA),
 124     CIPHER_SUITE(SSL, RSA, DES_CBC, SHA),
 125     CIPHER_SUITE(SSL, RSA, 3DES_EDE_CBC, SHA),
 126     CIPHER_SUITE(SSL, DH_DSS_EXPORT, DES40_CBC, SHA),
 127     CIPHER_SUITE(SSL, DH_DSS, DES_CBC, SHA),
 128     CIPHER_SUITE(SSL, DH_DSS, 3DES_EDE_CBC, SHA),
 129     CIPHER_SUITE(SSL, DH_RSA_EXPORT, DES40_CBC, SHA),
 130     CIPHER_SUITE(SSL, DH_RSA, DES_CBC, SHA),
 131     CIPHER_SUITE(SSL, DH_RSA, 3DES_EDE_CBC, SHA),
 132     CIPHER_SUITE(SSL, DHE_DSS_EXPORT, DES40_CBC, SHA),
 133     CIPHER_SUITE(SSL, DHE_DSS, DES_CBC, SHA),
 134     CIPHER_SUITE(SSL, DHE_DSS, 3DES_EDE_CBC, SHA),
 135     CIPHER_SUITE(SSL, DHE_RSA_EXPORT, DES40_CBC, SHA),
 136     CIPHER_SUITE(SSL, DHE_RSA, DES_CBC, SHA),
 137     CIPHER_SUITE(SSL, DHE_RSA, 3DES_EDE_CBC, SHA),
 138     CIPHER_SUITE(SSL, DH_anon_EXPORT, RC4_40, MD5),
 139     CIPHER_SUITE(SSL, DH_anon, RC4_128, MD5),
 140     CIPHER_SUITE(SSL, DH_anon_EXPORT, DES40_CBC, SHA),
 141     CIPHER_SUITE(SSL, DH_anon, DES_CBC, SHA),
 142     CIPHER_SUITE(SSL, DH_anon, 3DES_EDE_CBC, SHA),
 143     CIPHER_SUITE(SSL, FORTEZZA_DMS, NULL, SHA),
 144     CIPHER_SUITE(SSL, FORTEZZA_DMS, FORTEZZA_CBC, SHA),
 145
 146     CIPHER_SUITE(TLS, RSA, AES_128_CBC, SHA),
 147     CIPHER_SUITE(TLS, DH_DSS, AES_128_CBC, SHA),
 148     CIPHER_SUITE(TLS, DH_RSA, AES_128_CBC, SHA),
 149     CIPHER_SUITE(TLS, DHE_DSS, AES_128_CBC, SHA),
 150     CIPHER_SUITE(TLS, DHE_RSA, AES_128_CBC, SHA),
 151     CIPHER_SUITE(TLS, DH_anon, AES_128_CBC, SHA),
 152     CIPHER_SUITE(TLS, RSA, AES_256_CBC, SHA),
 153     CIPHER_SUITE(TLS, DH_DSS, AES_256_CBC, SHA),
 154     CIPHER_SUITE(TLS, DH_RSA, AES_256_CBC, SHA),
 155     CIPHER_SUITE(TLS, DHE_DSS, AES_256_CBC, SHA),
 156     CIPHER_SUITE(TLS, DHE_RSA, AES_256_CBC, SHA),
 157     CIPHER_SUITE(TLS, DH_anon, AES_256_CBC, SHA),
 158
 159 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
 160     CIPHER_SUITE(TLS, ECDH_ECDSA, NULL, SHA),
 161     CIPHER_SUITE(TLS, ECDH_ECDSA, RC4_128, SHA),
 162     CIPHER_SUITE(TLS, ECDH_ECDSA, 3DES_EDE_CBC, SHA),
 163     CIPHER_SUITE(TLS, ECDH_ECDSA, AES_128_CBC, SHA),
 164     CIPHER_SUITE(TLS, ECDH_ECDSA, AES_256_CBC, SHA),
 165     CIPHER_SUITE(TLS, ECDHE_ECDSA, NULL, SHA),
 166     CIPHER_SUITE(TLS, ECDHE_ECDSA, RC4_128, SHA),
 167     CIPHER_SUITE(TLS, ECDHE_ECDSA, 3DES_EDE_CBC, SHA),
 168     CIPHER_SUITE(TLS, ECDHE_ECDSA, AES_128_CBC, SHA),
 169     CIPHER_SUITE(TLS, ECDHE_ECDSA, AES_256_CBC, SHA),
 170     CIPHER_SUITE(TLS, ECDH_RSA, NULL, SHA),
 171     CIPHER_SUITE(TLS, ECDH_RSA, RC4_128, SHA),
 172     CIPHER_SUITE(TLS, ECDH_RSA, 3DES_EDE_CBC, SHA),
 173     CIPHER_SUITE(TLS, ECDH_RSA, AES_128_CBC, SHA),
 174     CIPHER_SUITE(TLS, ECDH_RSA, AES_256_CBC, SHA),
 175     CIPHER_SUITE(TLS, ECDHE_RSA, NULL, SHA),
 176     CIPHER_SUITE(TLS, ECDHE_RSA, RC4_128, SHA),
 177     CIPHER_SUITE(TLS, ECDHE_RSA, 3DES_EDE_CBC, SHA),
 178     CIPHER_SUITE(TLS, ECDHE_RSA, AES_128_CBC, SHA),
 179     CIPHER_SUITE(TLS, ECDHE_RSA, AES_256_CBC, SHA),
 180     CIPHER_SUITE(TLS, ECDH_anon, NULL, SHA),
 181     CIPHER_SUITE(TLS, ECDH_anon, RC4_128, SHA),
 182     CIPHER_SUITE(TLS, ECDH_anon, 3DES_EDE_CBC, SHA),
 183     CIPHER_SUITE(TLS, ECDH_anon, AES_128_CBC, SHA),
 184     CIPHER_SUITE(TLS, ECDH_anon, AES_256_CBC, SHA),
 185 #endif
 186
 187     CIPHER_SUITE(SSL, RSA, RC2_CBC, MD5),
 188     CIPHER_SUITE(SSL, RSA, IDEA_CBC, MD5),
 189     CIPHER_SUITE(SSL, RSA, DES_CBC, MD5),
 190     CIPHER_SUITE(SSL, RSA, 3DES_EDE_CBC, MD5),
 191 #undef CIPHER_SUITE
 192 };
 193
 194
 195 static const struct cipher_suite* get_cipher_suite(SSLCipherSuite cipher_suite)
 196 {
 197     int i;
 198     for (i = 0; i < sizeof(cipher_suites)/sizeof(cipher_suites[0]); i++)
 199     {
 200         if (cipher_suites[i].suite == cipher_suite)
 201             return &cipher_suites[i];
 202     }
 203
 204     return NULL;
 205 }
 206
 207
 208 static DWORD schan_get_session_protocol(struct mac_session* s)
 209 {
 210     SSLProtocol protocol;
 211     OSStatus status;
 212
 213     TRACE("(%p/%p)\n", s, s->context);
 214
 215     status = SSLGetNegotiatedProtocolVersion(s->context, &protocol);
 216     if (status != noErr)
 217     {
 218         ERR("Failed to get session protocol: %ld\n", status);
 219         return 0;
 220     }
 221
 222     TRACE("protocol %d\n", protocol);
 223
 224     switch (protocol)
 225     {
 226     case kSSLProtocol2: return SP_PROT_SSL2_CLIENT;
 227     case kSSLProtocol3: return SP_PROT_SSL3_CLIENT;
 228     case kTLSProtocol1: return SP_PROT_TLS1_CLIENT;
 229     default:
 230         FIXME("unknown protocol %d\n", protocol);
 231         return 0;
 232     }
 233 }
 234
 235 static ALG_ID schan_get_cipher_algid(const struct cipher_suite* c)
 236 {
 237     TRACE("(%#x)\n", (unsigned int)c->suite);
 238
 239     switch (c->enc_alg)
 240     {
 241     case schan_enc_3DES_EDE_CBC:    return CALG_3DES;
 242     case schan_enc_AES_128_CBC:     return CALG_AES_128;
 243     case schan_enc_AES_256_CBC:     return CALG_AES_256;
 244     case schan_enc_DES_CBC:         return CALG_DES;
 245     case schan_enc_DES40_CBC:       return CALG_DES;
 246     case schan_enc_NULL:            return 0;
 247     case schan_enc_RC2_CBC_40:      return CALG_RC2;
 248     case schan_enc_RC2_CBC:         return CALG_RC2;
 249     case schan_enc_RC4_128:         return CALG_RC4;
 250     case schan_enc_RC4_40:          return CALG_RC4;
 251
 252     case schan_enc_FORTEZZA_CBC:
 253     case schan_enc_IDEA_CBC:
 254         FIXME("Don't know CALG for encryption algorithm %d, returning 0\n", c->enc_alg);
 255         return 0;
 256
 257     default:
 258         FIXME("Unknown encryption algorithm %d for cipher suite %#x, returning 0\n", c->enc_alg, (unsigned int)c->suite);
 259         return 0;
 260     }
 261 }
 262
 263 static unsigned int schan_get_cipher_key_size(const struct cipher_suite* c)
 264 {
 265     TRACE("(%#x)\n", (unsigned int)c->suite);
 266
 267     switch (c->enc_alg)
 268     {
 269     case schan_enc_3DES_EDE_CBC:    return 168;
 270     case schan_enc_AES_128_CBC:     return 128;
 271     case schan_enc_AES_256_CBC:     return 256;
 272     case schan_enc_DES_CBC:         return 56;
 273     case schan_enc_DES40_CBC:       return 40;
 274     case schan_enc_NULL:            return 0;
 275     case schan_enc_RC2_CBC_40:      return 40;
 276     case schan_enc_RC2_CBC:         return 128;
 277     case schan_enc_RC4_128:         return 128;
 278     case schan_enc_RC4_40:          return 40;
 279
 280     case schan_enc_FORTEZZA_CBC:
 281     case schan_enc_IDEA_CBC:
 282         FIXME("Don't know key size for encryption algorithm %d, returning 0\n", c->enc_alg);
 283         return 0;
 284
 285     default:
 286         FIXME("Unknown encryption algorithm %d for cipher suite %#x, returning 0\n", c->enc_alg, (unsigned int)c->suite);
 287         return 0;
 288     }
 289 }
 290
 291 static ALG_ID schan_get_mac_algid(const struct cipher_suite* c)
 292 {
 293     TRACE("(%#x)\n", (unsigned int)c->suite);
 294
 295     switch (c->mac_alg)
 296     {
 297     case schan_mac_MD5:     return CALG_MD5;
 298     case schan_mac_NULL:    return 0;
 299     case schan_mac_SHA:     return CALG_SHA;
 300
 301     default:
 302         FIXME("Unknown hashing algorithm %d for cipher suite %#x, returning 0\n", c->mac_alg, (unsigned)c->suite);
 303         return 0;
 304     }
 305 }
 306
 307 static unsigned int schan_get_mac_key_size(const struct cipher_suite* c)
 308 {
 309     TRACE("(%#x)\n", (unsigned int)c->suite);
 310
 311     switch (c->mac_alg)
 312     {
 313     case schan_mac_MD5:     return 128;
 314     case schan_mac_NULL:    return 0;
 315     case schan_mac_SHA:     return 160;
 316
 317     default:
 318         FIXME("Unknown hashing algorithm %d for cipher suite %#x, returning 0\n", c->mac_alg, (unsigned)c->suite);
 319         return 0;
 320     }
 321 }
 322
 323 static ALG_ID schan_get_kx_algid(const struct cipher_suite* c)
 324 {
 325     TRACE("(%#x)\n", (unsigned int)c->suite);
 326
 327     switch (c->kx_alg)
 328     {
 329     case schan_kx_DHE_DSS_EXPORT:
 330     case schan_kx_DHE_DSS:
 331     case schan_kx_DHE_RSA_EXPORT:
 332     case schan_kx_DHE_RSA:          return CALG_DH_EPHEM;
 333     case schan_kx_NULL:             return 0;
 334     case schan_kx_RSA:              return CALG_RSA_KEYX;
 335
 336     case schan_kx_DH_anon_EXPORT:
 337     case schan_kx_DH_anon:
 338     case schan_kx_DH_DSS_EXPORT:
 339     case schan_kx_DH_DSS:
 340     case schan_kx_DH_RSA_EXPORT:
 341     case schan_kx_DH_RSA:
 342     case schan_kx_ECDH_anon:
 343     case schan_kx_ECDH_ECDSA:
 344     case schan_kx_ECDH_RSA:
 345     case schan_kx_ECDHE_ECDSA:
 346     case schan_kx_ECDHE_RSA:
 347     case schan_kx_FORTEZZA_DMS:
 348     case schan_kx_RSA_EXPORT:
 349         FIXME("Don't know CALG for key exchange algorithm %d for cipher suite %#x, returning 0\n", c->kx_alg, (unsigned)c->suite);
 350         return 0;
 351
 352     default:
 353         FIXME("Unknown key exchange algorithm %d for cipher suite %#x, returning 0\n", c->kx_alg, (unsigned)c->suite);
 354         return 0;
 355     }
 356 }
 357
 358
 359 /* schan_pull_adapter
 360  *      Callback registered with SSLSetIOFuncs as the read function for a
 361  *      session.  Reads data from the session connection.  Conforms to the
 362  *      SSLReadFunc type.
 363  *
 364  *  transport - The session connection
 365  *  buff - The buffer into which to store the read data.  Must be at least
 366  *         *buff_len bytes in length.
 367  *  *buff_len - On input, the desired length to read.  On successful return,
 368  *              the number of bytes actually read.
 369  *
 370  *  Returns:
 371  *      noErr on complete success meaning the requested length was successfully
 372  *          read.
 373  *      errSSLWouldBlock when the requested length could not be read without
 374  *          blocking.  *buff_len indicates how much was actually read.  The
 375  *          caller should try again if/when they want to read more.
 376  *      errSSLClosedGraceful when the connection has closed and there's no
 377  *          more data to be read.
 378  *      other error code for failure.
 379  */
 380 static OSStatus schan_pull_adapter(SSLConnectionRef transport, void *buff,
 381                                    SIZE_T *buff_len)
 382 {
 383     struct mac_session *s = (struct mac_session*)transport;
 384     size_t requested = *buff_len;
 385     int status;
 386     OSStatus ret;
 387
 388     TRACE("(%p/%p, %p, %p/%lu)\n", s, s->transport, buff, buff_len, *buff_len);
 389
 390     status = schan_pull(s->transport, buff, buff_len);
 391     if (status == 0)
 392     {
 393         if (*buff_len == 0)
 394         {
 395             TRACE("Connection closed\n");
 396             ret = errSSLClosedGraceful;
 397         }
 398         else if (*buff_len < requested)
 399         {
 400             TRACE("Pulled %lu bytes before would block\n", *buff_len);
 401             ret = errSSLWouldBlock;
 402         }
 403         else
 404         {
 405             TRACE("Pulled %lu bytes\n", *buff_len);
 406             ret = noErr;
 407         }
 408     }
 409     else if (status == EAGAIN)
 410     {
 411         TRACE("Would block before being able to pull anything\n");
 412         ret = errSSLWouldBlock;
 413     }
 414     else
 415     {
 416         FIXME("Unknown status code from schan_pull: %d\n", status);
 417         ret = ioErr;
 418     }
 419
 420     return ret;
 421 }
 422
 423 /* schan_push_adapter
 424  *      Callback registered with SSLSetIOFuncs as the write function for a
 425  *      session.  Writes data to the session connection.  Conforms to the
 426  *      SSLWriteFunc type.
 427  *
 428  *  transport - The session connection
 429  *  buff - The buffer of data to write.  Must be at least *buff_len bytes in length.
 430  *  *buff_len - On input, the desired length to write.  On successful return,
 431  *              the number of bytes actually written.
 432  *
 433  *  Returns:
 434  *      noErr on complete or partial success; *buff_len indicates how much data
 435  *          was actually written, which may be less than requrested.
 436  *      errSSLWouldBlock when no data could be written without blocking.  The
 437  *          caller should try again.
 438  *      other error code for failure.
 439  */
 440 static OSStatus schan_push_adapter(SSLConnectionRef transport, const void *buff,
 441                                        SIZE_T *buff_len)
 442 {
 443     struct mac_session *s = (struct mac_session*)transport;
 444     int status;
 445     OSStatus ret;
 446
 447     TRACE("(%p/%p, %p, %p/%lu)\n", s, s->transport, buff, buff_len, *buff_len);
 448
 449     status = schan_push(s->transport, buff, buff_len);
 450     if (status == 0)
 451     {
 452         TRACE("Pushed %lu bytes\n", *buff_len);
 453         ret = noErr;
 454     }
 455     else if (status == EAGAIN)
 456     {
 457         TRACE("Would block before being able to push anything\n");
 458         ret = errSSLWouldBlock;
 459     }
 460     else
 461     {
 462         FIXME("Unknown status code from schan_push: %d\n", status);
 463         ret = ioErr;
 464     }
 465
 466     return ret;
 467 }
 468
 469
 470 BOOL schan_imp_create_session(schan_imp_session *session, BOOL is_server,
 471                               schan_imp_certificate_credentials cred)
 472 {
 473     struct mac_session *s;
 474     OSStatus status;
 475
 476     TRACE("(%p, %d)\n", session, is_server);
 477
 478     s = HeapAlloc(GetProcessHeap(), 0, sizeof(*s));
 479     if (!s)
 480         return FALSE;
 481
 482     status = SSLNewContext(is_server, &s->context);
 483     if (status != noErr)
 484     {
 485         ERR("Failed to create session context: %ld\n", (long)status);
 486         goto fail;
 487     }
 488
 489     status = SSLSetConnection(s->context, s);
 490     if (status != noErr)
 491     {
 492         ERR("Failed to set session connection: %ld\n", (long)status);
 493         goto fail;
 494     }
 495
 496     status = SSLSetEnableCertVerify(s->context, FALSE);
 497     if (status != noErr)
 498     {
 499         ERR("Failed to disable certificate verification: %ld\n", (long)status);
 500         goto fail;
 501     }
 502
 503     status = SSLSetProtocolVersionEnabled(s->context, kSSLProtocol2, FALSE);
 504     if (status != noErr)
 505     {
 506         ERR("Failed to disable SSL version 2: %ld\n", (long)status);
 507         goto fail;
 508     }
 509
 510     status = SSLSetIOFuncs(s->context, schan_pull_adapter, schan_push_adapter);
 511     if (status != noErr)
 512     {
 513         ERR("Failed to set session I/O funcs: %ld\n", (long)status);
 514         goto fail;
 515     }
 516
 517     TRACE("    -> %p/%p\n", s, s->context);
 518
 519     *session = (schan_imp_session)s;
 520     return TRUE;
 521
 522 fail:
 523     HeapFree(GetProcessHeap(), 0, s);
 524     return FALSE;
 525 }
 526
 527 void schan_imp_dispose_session(schan_imp_session session)
 528 {
 529     struct mac_session *s = (struct mac_session*)session;
 530     OSStatus status;
 531
 532     TRACE("(%p/%p)\n", s, s->context);
 533
 534     status = SSLDisposeContext(s->context);
 535     if (status != noErr)
 536         ERR("Failed to dispose of session context: %ld\n", status);
 537     HeapFree(GetProcessHeap(), 0, s);
 538 }
 539
 540 void schan_imp_set_session_transport(schan_imp_session session,
 541                                      struct schan_transport *t)
 542 {
 543     struct mac_session *s = (struct mac_session*)session;
 544
 545     TRACE("(%p/%p, %p)\n", s, s->context, t);
 546
 547     s->transport = t;
 548 }
 549
 550 SECURITY_STATUS schan_imp_handshake(schan_imp_session session)
 551 {
 552     struct mac_session *s = (struct mac_session*)session;
 553     OSStatus status;
 554
 555     TRACE("(%p/%p)\n", s, s->context);
 556
 557     status = SSLHandshake(s->context);
 558     if (status == noErr)
 559     {
 560         TRACE("Handshake completed\n");
 561         return SEC_E_OK;
 562     }
 563     else if (status == errSSLWouldBlock)
 564     {
 565         TRACE("Continue...\n");
 566         return SEC_I_CONTINUE_NEEDED;
 567     }
 568     else if (errSecErrnoBase <= status && status <= errSecErrnoLimit)
 569     {
 570         ERR("Handshake failed: %s\n", strerror(status));
 571         return SEC_E_INTERNAL_ERROR;
 572     }
 573     else
 574     {
 575         ERR("Handshake failed: %ld\n", (long)status);
 576         cssmPerror("SSLHandshake", status);
 577         return SEC_E_INTERNAL_ERROR;
 578     }
 579
 580     /* Never reached */
 581     return SEC_E_OK;
 582 }
 583
 584 unsigned int schan_imp_get_session_cipher_block_size(schan_imp_session session)
 585 {
 586     struct mac_session* s = (struct mac_session*)session;
 587     SSLCipherSuite cipherSuite;
 588     const struct cipher_suite* c;
 589     OSStatus status;
 590
 591     TRACE("(%p/%p)\n", s, s->context);
 592
 593     status = SSLGetNegotiatedCipher(s->context, &cipherSuite);
 594     if (status != noErr)
 595     {
 596         ERR("Failed to get session cipher suite: %ld\n", status);
 597         return 0;
 598     }
 599
 600     c = get_cipher_suite(cipherSuite);
 601     if (!c)
 602     {
 603         ERR("Unknown session cipher suite: %#x\n", (unsigned int)cipherSuite);
 604         return 0;
 605     }
 606
 607     switch (c->enc_alg)
 608     {
 609     case schan_enc_3DES_EDE_CBC:    return 64;
 610     case schan_enc_AES_128_CBC:     return 128;
 611     case schan_enc_AES_256_CBC:     return 128;
 612     case schan_enc_DES_CBC:         return 64;
 613     case schan_enc_DES40_CBC:       return 64;
 614     case schan_enc_NULL:            return 0;
 615     case schan_enc_RC2_CBC_40:      return 64;
 616     case schan_enc_RC2_CBC:         return 64;
 617     case schan_enc_RC4_128:         return 0;
 618     case schan_enc_RC4_40:          return 0;
 619
 620     case schan_enc_FORTEZZA_CBC:
 621     case schan_enc_IDEA_CBC:
 622         FIXME("Don't know block size for encryption algorithm %d, returning 0\n", c->enc_alg);
 623         return 0;
 624
 625     default:
 626         FIXME("Unknown encryption algorithm %d for cipher suite %#x, returning 0\n", c->enc_alg, (unsigned int)c->suite);
 627         return 0;
 628     }
 629 }
 630
 631 unsigned int schan_imp_get_max_message_size(schan_imp_session session)
 632 {
 633     FIXME("Returning 1 << 14.\n");
 634     return 1 << 14;
 635 }
 636
 637 SECURITY_STATUS schan_imp_get_connection_info(schan_imp_session session,
 638                                               SecPkgContext_ConnectionInfo *info)
 639 {
 640     struct mac_session* s = (struct mac_session*)session;
 641     SSLCipherSuite cipherSuite;
 642     const struct cipher_suite* c;
 643     OSStatus status;
 644
 645     TRACE("(%p/%p, %p)\n", s, s->context, info);
 646
 647     status = SSLGetNegotiatedCipher(s->context, &cipherSuite);
 648     if (status != noErr)
 649     {
 650         ERR("Failed to get session cipher suite: %ld\n", status);
 651         return SEC_E_INTERNAL_ERROR;
 652     }
 653
 654     c = get_cipher_suite(cipherSuite);
 655     if (!c)
 656     {
 657         ERR("Unknown session cipher suite: %#x\n", (unsigned int)cipherSuite);
 658         return SEC_E_INTERNAL_ERROR;
 659     }
 660
 661     info->dwProtocol = schan_get_session_protocol(s);
 662     info->aiCipher = schan_get_cipher_algid(c);
 663     info->dwCipherStrength = schan_get_cipher_key_size(c);
 664     info->aiHash = schan_get_mac_algid(c);
 665     info->dwHashStrength = schan_get_mac_key_size(c);
 666     info->aiExch = schan_get_kx_algid(c);
 667     /* FIXME: info->dwExchStrength? */
 668     info->dwExchStrength = 0;
 669
 670     return SEC_E_OK;
 671 }
 672
 673 SECURITY_STATUS schan_imp_get_session_peer_certificate(schan_imp_session session,
 674                                                        PCCERT_CONTEXT *cert)
 675 {
 676     struct mac_session* s = (struct mac_session*)session;
 677     SECURITY_STATUS ret = SEC_E_INTERNAL_ERROR;
 678     CFArrayRef certs;
 679     OSStatus status;
 680
 681     TRACE("(%p/%p, %p)\n", s, s->context, cert);
 682
 683     status = SSLCopyPeerCertificates(s->context, &certs);
 684     if (status == noErr && certs)
 685     {
 686         SecCertificateRef mac_cert;
 687         CFDataRef data;
 688         if (CFArrayGetCount(certs) &&
 689             (mac_cert = (SecCertificateRef)CFArrayGetValueAtIndex(certs, 0)) &&
 690             (SecKeychainItemExport(mac_cert, kSecFormatX509Cert, 0, NULL, &data) == noErr))
 691         {
 692             *cert = CertCreateCertificateContext(X509_ASN_ENCODING,
 693                     CFDataGetBytePtr(data), CFDataGetLength(data));
 694             if (*cert)
 695                 ret = SEC_E_OK;
 696             else
 697             {
 698                 ret = GetLastError();
 699                 WARN("CertCreateCertificateContext failed: %x\n", ret);
 700             }
 701             CFRelease(data);
 702         }
 703         else
 704             WARN("Couldn't extract certificate data\n");
 705         CFRelease(certs);
 706     }
 707     else
 708         WARN("SSLCopyPeerCertificates failed: %ld\n", (long)status);
 709
 710     return ret;
 711 }
 712
 713 SECURITY_STATUS schan_imp_send(schan_imp_session session, const void *buffer,
 714                                SIZE_T *length)
 715 {
 716     struct mac_session* s = (struct mac_session*)session;
 717     OSStatus status;
 718
 719     TRACE("(%p/%p, %p, %p/%lu)\n", s, s->context, buffer, length, *length);
 720
 721     status = SSLWrite(s->context, buffer, *length, length);
 722     if (status == noErr)
 723         TRACE("Wrote %lu bytes\n", *length);
 724     else if (status == errSSLWouldBlock)
 725     {
 726         if (!*length)
 727         {
 728             TRACE("Would block before being able to write anything\n");
 729             return SEC_I_CONTINUE_NEEDED;
 730         }
 731         else
 732             TRACE("Wrote %lu bytes before would block\n", *length);
 733     }
 734     else
 735     {
 736         WARN("SSLWrite failed: %ld\n", (long)status);
 737         return SEC_E_INTERNAL_ERROR;
 738     }
 739
 740     return SEC_E_OK;
 741 }
 742
 743 SECURITY_STATUS schan_imp_recv(schan_imp_session session, void *buffer,
 744                                SIZE_T *length)
 745 {
 746     struct mac_session* s = (struct mac_session*)session;
 747     OSStatus status;
 748
 749     TRACE("(%p/%p, %p, %p/%lu)\n", s, s->context, buffer, length, *length);
 750
 751     status = SSLRead(s->context, buffer, *length, length);
 752     if (status == noErr)
 753         TRACE("Read %lu bytes\n", *length);
 754     else if (status == errSSLWouldBlock)
 755     {
 756         if (!*length)
 757         {
 758             TRACE("Would block before being able to read anything\n");
 759             return SEC_I_CONTINUE_NEEDED;
 760         }
 761         else
 762             TRACE("Read %lu bytes before would block\n", *length);
 763     }
 764     else
 765     {
 766         WARN("SSLRead failed: %ld\n", (long)status);
 767         return SEC_E_INTERNAL_ERROR;
 768     }
 769
 770     return SEC_E_OK;
 771 }
 772
 773 BOOL schan_imp_allocate_certificate_credentials(schan_imp_certificate_credentials *c)
 774 {
 775     /* The certificate is never really used for anything. */
 776     *c = NULL;
 777     return TRUE;
 778 }
 779
 780 void schan_imp_free_certificate_credentials(schan_imp_certificate_credentials c)
 781 {
 782 }
 783
 784 BOOL schan_imp_init(void)
 785 {
 786     TRACE("()\n");
 787     return TRUE;
 788 }
 789
 790 void schan_imp_deinit(void)
 791 {
 792     TRACE("()\n");
 793 }
 794
 795 #endif /* HAVE_SECURITY_SECURITY_H */