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 #if MAC_OS_X_VERSION_MAX_ALLOWED < 1060
  49 /* Defined in <Security/CipherSuite.h> in the 10.6 SDK or later. */
  50 enum {
  51     TLS_ECDH_ECDSA_WITH_NULL_SHA           =    0xC001,
  52     TLS_ECDH_ECDSA_WITH_RC4_128_SHA        =    0xC002,
  53     TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA   =    0xC003,
  54     TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA    =    0xC004,
  55     TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA    =    0xC005,
  56     TLS_ECDHE_ECDSA_WITH_NULL_SHA          =    0xC006,
  57     TLS_ECDHE_ECDSA_WITH_RC4_128_SHA       =    0xC007,
  58     TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA  =    0xC008,
  59     TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA   =    0xC009,
  60     TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA   =    0xC00A,
  61     TLS_ECDH_RSA_WITH_NULL_SHA             =    0xC00B,
  62     TLS_ECDH_RSA_WITH_RC4_128_SHA          =    0xC00C,
  63     TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA     =    0xC00D,
  64     TLS_ECDH_RSA_WITH_AES_128_CBC_SHA      =    0xC00E,
  65     TLS_ECDH_RSA_WITH_AES_256_CBC_SHA      =    0xC00F,
  66     TLS_ECDHE_RSA_WITH_NULL_SHA            =    0xC010,
  67     TLS_ECDHE_RSA_WITH_RC4_128_SHA         =    0xC011,
  68     TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA    =    0xC012,
  69     TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA     =    0xC013,
  70     TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA     =    0xC014,
  71     TLS_ECDH_anon_WITH_NULL_SHA            =    0xC015,
  72     TLS_ECDH_anon_WITH_RC4_128_SHA         =    0xC016,
  73     TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA    =    0xC017,
  74     TLS_ECDH_anon_WITH_AES_128_CBC_SHA     =    0xC018,
  75     TLS_ECDH_anon_WITH_AES_256_CBC_SHA     =    0xC019,
  76 };
  77 #endif
  78
  79 struct mac_session {
  80     SSLContextRef context;
  81     struct schan_transport *transport;
  82 };
  83
  84
  85 enum {
  86     schan_proto_SSL,
  87     schan_proto_TLS,
  88 };
  89
  90 enum {
  91     schan_kx_DH_anon_EXPORT,
  92     schan_kx_DH_anon,
  93     schan_kx_DH_DSS_EXPORT,
  94     schan_kx_DH_DSS,
  95     schan_kx_DH_RSA_EXPORT,
  96     schan_kx_DH_RSA,
  97     schan_kx_DHE_DSS_EXPORT,
  98     schan_kx_DHE_DSS,
  99     schan_kx_DHE_RSA_EXPORT,
 100     schan_kx_DHE_RSA,
 101     schan_kx_ECDH_anon,
 102     schan_kx_ECDH_ECDSA,
 103     schan_kx_ECDH_RSA,
 104     schan_kx_ECDHE_ECDSA,
 105     schan_kx_ECDHE_RSA,
 106     schan_kx_FORTEZZA_DMS,
 107     schan_kx_NULL,
 108     schan_kx_RSA_EXPORT,
 109     schan_kx_RSA,
 110 };
 111
 112 enum {
 113     schan_enc_3DES_EDE_CBC,
 114     schan_enc_AES_128_CBC,
 115     schan_enc_AES_256_CBC,
 116     schan_enc_DES_CBC,
 117     schan_enc_DES40_CBC,
 118     schan_enc_FORTEZZA_CBC,
 119     schan_enc_IDEA_CBC,
 120     schan_enc_NULL,
 121     schan_enc_RC2_CBC,
 122     schan_enc_RC2_CBC_40,
 123     schan_enc_RC4_128,
 124     schan_enc_RC4_40,
 125 };
 126
 127 enum {
 128     schan_mac_MD5,
 129     schan_mac_NULL,
 130     schan_mac_SHA,
 131 };
 132
 133
 134 struct cipher_suite {
 135     SSLCipherSuite suite;
 136     int protocol;
 137     int kx_alg;
 138     int enc_alg;
 139     int mac_alg;
 140 };
 141
 142 /* This table corresponds to the enum in <Security/CipherSuite.h>. */
 143 static const struct cipher_suite cipher_suites[] = {
 144 #define CIPHER_SUITE(p, kx, enc, mac) { p##_##kx##_WITH_##enc##_##mac, schan_proto_##p, \
 145                                         schan_kx_##kx, schan_enc_##enc, schan_mac_##mac }
 146     CIPHER_SUITE(SSL, RSA, NULL, MD5),
 147     CIPHER_SUITE(SSL, RSA, NULL, MD5),
 148     CIPHER_SUITE(SSL, RSA, NULL, SHA),
 149     CIPHER_SUITE(SSL, RSA_EXPORT, RC4_40, MD5),
 150     CIPHER_SUITE(SSL, RSA, RC4_128, MD5),
 151     CIPHER_SUITE(SSL, RSA, RC4_128, SHA),
 152     CIPHER_SUITE(SSL, RSA_EXPORT, RC2_CBC_40, MD5),
 153     CIPHER_SUITE(SSL, RSA, IDEA_CBC, SHA),
 154     CIPHER_SUITE(SSL, RSA_EXPORT, DES40_CBC, SHA),
 155     CIPHER_SUITE(SSL, RSA, DES_CBC, SHA),
 156     CIPHER_SUITE(SSL, RSA, 3DES_EDE_CBC, SHA),
 157     CIPHER_SUITE(SSL, DH_DSS_EXPORT, DES40_CBC, SHA),
 158     CIPHER_SUITE(SSL, DH_DSS, DES_CBC, SHA),
 159     CIPHER_SUITE(SSL, DH_DSS, 3DES_EDE_CBC, SHA),
 160     CIPHER_SUITE(SSL, DH_RSA_EXPORT, DES40_CBC, SHA),
 161     CIPHER_SUITE(SSL, DH_RSA, DES_CBC, SHA),
 162     CIPHER_SUITE(SSL, DH_RSA, 3DES_EDE_CBC, SHA),
 163     CIPHER_SUITE(SSL, DHE_DSS_EXPORT, DES40_CBC, SHA),
 164     CIPHER_SUITE(SSL, DHE_DSS, DES_CBC, SHA),
 165     CIPHER_SUITE(SSL, DHE_DSS, 3DES_EDE_CBC, SHA),
 166     CIPHER_SUITE(SSL, DHE_RSA_EXPORT, DES40_CBC, SHA),
 167     CIPHER_SUITE(SSL, DHE_RSA, DES_CBC, SHA),
 168     CIPHER_SUITE(SSL, DHE_RSA, 3DES_EDE_CBC, SHA),
 169     CIPHER_SUITE(SSL, DH_anon_EXPORT, RC4_40, MD5),
 170     CIPHER_SUITE(SSL, DH_anon, RC4_128, MD5),
 171     CIPHER_SUITE(SSL, DH_anon_EXPORT, DES40_CBC, SHA),
 172     CIPHER_SUITE(SSL, DH_anon, DES_CBC, SHA),
 173     CIPHER_SUITE(SSL, DH_anon, 3DES_EDE_CBC, SHA),
 174     CIPHER_SUITE(SSL, FORTEZZA_DMS, NULL, SHA),
 175     CIPHER_SUITE(SSL, FORTEZZA_DMS, FORTEZZA_CBC, SHA),
 176
 177     CIPHER_SUITE(TLS, RSA, AES_128_CBC, SHA),
 178     CIPHER_SUITE(TLS, DH_DSS, AES_128_CBC, SHA),
 179     CIPHER_SUITE(TLS, DH_RSA, AES_128_CBC, SHA),
 180     CIPHER_SUITE(TLS, DHE_DSS, AES_128_CBC, SHA),
 181     CIPHER_SUITE(TLS, DHE_RSA, AES_128_CBC, SHA),
 182     CIPHER_SUITE(TLS, DH_anon, AES_128_CBC, SHA),
 183     CIPHER_SUITE(TLS, RSA, AES_256_CBC, SHA),
 184     CIPHER_SUITE(TLS, DH_DSS, AES_256_CBC, SHA),
 185     CIPHER_SUITE(TLS, DH_RSA, AES_256_CBC, SHA),
 186     CIPHER_SUITE(TLS, DHE_DSS, AES_256_CBC, SHA),
 187     CIPHER_SUITE(TLS, DHE_RSA, AES_256_CBC, SHA),
 188     CIPHER_SUITE(TLS, DH_anon, AES_256_CBC, SHA),
 189
 190     CIPHER_SUITE(TLS, ECDH_ECDSA, NULL, SHA),
 191     CIPHER_SUITE(TLS, ECDH_ECDSA, RC4_128, SHA),
 192     CIPHER_SUITE(TLS, ECDH_ECDSA, 3DES_EDE_CBC, SHA),
 193     CIPHER_SUITE(TLS, ECDH_ECDSA, AES_128_CBC, SHA),
 194     CIPHER_SUITE(TLS, ECDH_ECDSA, AES_256_CBC, SHA),
 195     CIPHER_SUITE(TLS, ECDHE_ECDSA, NULL, SHA),
 196     CIPHER_SUITE(TLS, ECDHE_ECDSA, RC4_128, SHA),
 197     CIPHER_SUITE(TLS, ECDHE_ECDSA, 3DES_EDE_CBC, SHA),
 198     CIPHER_SUITE(TLS, ECDHE_ECDSA, AES_128_CBC, SHA),
 199     CIPHER_SUITE(TLS, ECDHE_ECDSA, AES_256_CBC, SHA),
 200     CIPHER_SUITE(TLS, ECDH_RSA, NULL, SHA),
 201     CIPHER_SUITE(TLS, ECDH_RSA, RC4_128, SHA),
 202     CIPHER_SUITE(TLS, ECDH_RSA, 3DES_EDE_CBC, SHA),
 203     CIPHER_SUITE(TLS, ECDH_RSA, AES_128_CBC, SHA),
 204     CIPHER_SUITE(TLS, ECDH_RSA, AES_256_CBC, SHA),
 205     CIPHER_SUITE(TLS, ECDHE_RSA, NULL, SHA),
 206     CIPHER_SUITE(TLS, ECDHE_RSA, RC4_128, SHA),
 207     CIPHER_SUITE(TLS, ECDHE_RSA, 3DES_EDE_CBC, SHA),
 208     CIPHER_SUITE(TLS, ECDHE_RSA, AES_128_CBC, SHA),
 209     CIPHER_SUITE(TLS, ECDHE_RSA, AES_256_CBC, SHA),
 210     CIPHER_SUITE(TLS, ECDH_anon, NULL, SHA),
 211     CIPHER_SUITE(TLS, ECDH_anon, RC4_128, SHA),
 212     CIPHER_SUITE(TLS, ECDH_anon, 3DES_EDE_CBC, SHA),
 213     CIPHER_SUITE(TLS, ECDH_anon, AES_128_CBC, SHA),
 214     CIPHER_SUITE(TLS, ECDH_anon, AES_256_CBC, SHA),
 215
 216     CIPHER_SUITE(SSL, RSA, RC2_CBC, MD5),
 217     CIPHER_SUITE(SSL, RSA, IDEA_CBC, MD5),
 218     CIPHER_SUITE(SSL, RSA, DES_CBC, MD5),
 219     CIPHER_SUITE(SSL, RSA, 3DES_EDE_CBC, MD5),
 220 #undef CIPHER_SUITE
 221 };
 222
 223
 224 static const struct cipher_suite* get_cipher_suite(SSLCipherSuite cipher_suite)
 225 {
 226     int i;
 227     for (i = 0; i < sizeof(cipher_suites)/sizeof(cipher_suites[0]); i++)
 228     {
 229         if (cipher_suites[i].suite == cipher_suite)
 230             return &cipher_suites[i];
 231     }
 232
 233     return NULL;
 234 }
 235
 236
 237 static DWORD schan_get_session_protocol(struct mac_session* s)
 238 {
 239     SSLProtocol protocol;
 240     OSStatus status;
 241
 242     TRACE("(%p/%p)\n", s, s->context);
 243
 244     status = SSLGetNegotiatedProtocolVersion(s->context, &protocol);
 245     if (status != noErr)
 246     {
 247         ERR("Failed to get session protocol: %ld\n", status);
 248         return 0;
 249     }
 250
 251     TRACE("protocol %d\n", protocol);
 252
 253     switch (protocol)
 254     {
 255     case kSSLProtocol2: return SP_PROT_SSL2_CLIENT;
 256     case kSSLProtocol3: return SP_PROT_SSL3_CLIENT;
 257     case kTLSProtocol1: return SP_PROT_TLS1_CLIENT;
 258     default:
 259         FIXME("unknown protocol %d\n", protocol);
 260         return 0;
 261     }
 262 }
 263
 264 static ALG_ID schan_get_cipher_algid(const struct cipher_suite* c)
 265 {
 266     TRACE("(%#x)\n", (unsigned int)c->suite);
 267
 268     switch (c->enc_alg)
 269     {
 270     case schan_enc_3DES_EDE_CBC:    return CALG_3DES;
 271     case schan_enc_AES_128_CBC:     return CALG_AES_128;
 272     case schan_enc_AES_256_CBC:     return CALG_AES_256;
 273     case schan_enc_DES_CBC:         return CALG_DES;
 274     case schan_enc_DES40_CBC:       return CALG_DES;
 275     case schan_enc_NULL:            return 0;
 276     case schan_enc_RC2_CBC_40:      return CALG_RC2;
 277     case schan_enc_RC2_CBC:         return CALG_RC2;
 278     case schan_enc_RC4_128:         return CALG_RC4;
 279     case schan_enc_RC4_40:          return CALG_RC4;
 280
 281     case schan_enc_FORTEZZA_CBC:
 282     case schan_enc_IDEA_CBC:
 283         FIXME("Don't know CALG for encryption algorithm %d, returning 0\n", c->enc_alg);
 284         return 0;
 285
 286     default:
 287         FIXME("Unknown encryption algorithm %d for cipher suite %#x, returning 0\n", c->enc_alg, (unsigned int)c->suite);
 288         return 0;
 289     }
 290 }
 291
 292 static unsigned int schan_get_cipher_key_size(const struct cipher_suite* c)
 293 {
 294     TRACE("(%#x)\n", (unsigned int)c->suite);
 295
 296     switch (c->enc_alg)
 297     {
 298     case schan_enc_3DES_EDE_CBC:    return 168;
 299     case schan_enc_AES_128_CBC:     return 128;
 300     case schan_enc_AES_256_CBC:     return 256;
 301     case schan_enc_DES_CBC:         return 56;
 302     case schan_enc_DES40_CBC:       return 40;
 303     case schan_enc_NULL:            return 0;
 304     case schan_enc_RC2_CBC_40:      return 40;
 305     case schan_enc_RC2_CBC:         return 128;
 306     case schan_enc_RC4_128:         return 128;
 307     case schan_enc_RC4_40:          return 40;
 308
 309     case schan_enc_FORTEZZA_CBC:
 310     case schan_enc_IDEA_CBC:
 311         FIXME("Don't know key size for encryption algorithm %d, returning 0\n", c->enc_alg);
 312         return 0;
 313
 314     default:
 315         FIXME("Unknown encryption algorithm %d for cipher suite %#x, returning 0\n", c->enc_alg, (unsigned int)c->suite);
 316         return 0;
 317     }
 318 }
 319
 320 static ALG_ID schan_get_mac_algid(const struct cipher_suite* c)
 321 {
 322     TRACE("(%#x)\n", (unsigned int)c->suite);
 323
 324     switch (c->mac_alg)
 325     {
 326     case schan_mac_MD5:     return CALG_MD5;
 327     case schan_mac_NULL:    return 0;
 328     case schan_mac_SHA:     return CALG_SHA;
 329
 330     default:
 331         FIXME("Unknown hashing algorithm %d for cipher suite %#x, returning 0\n", c->mac_alg, (unsigned)c->suite);
 332         return 0;
 333     }
 334 }
 335
 336 static unsigned int schan_get_mac_key_size(const struct cipher_suite* c)
 337 {
 338     TRACE("(%#x)\n", (unsigned int)c->suite);
 339
 340     switch (c->mac_alg)
 341     {
 342     case schan_mac_MD5:     return 128;
 343     case schan_mac_NULL:    return 0;
 344     case schan_mac_SHA:     return 160;
 345
 346     default:
 347         FIXME("Unknown hashing algorithm %d for cipher suite %#x, returning 0\n", c->mac_alg, (unsigned)c->suite);
 348         return 0;
 349     }
 350 }
 351
 352 static ALG_ID schan_get_kx_algid(const struct cipher_suite* c)
 353 {
 354     TRACE("(%#x)\n", (unsigned int)c->suite);
 355
 356     switch (c->kx_alg)
 357     {
 358     case schan_kx_DHE_DSS_EXPORT:
 359     case schan_kx_DHE_DSS:
 360     case schan_kx_DHE_RSA_EXPORT:
 361     case schan_kx_DHE_RSA:          return CALG_DH_EPHEM;
 362     case schan_kx_ECDH_anon:
 363     case schan_kx_ECDH_ECDSA:
 364     case schan_kx_ECDH_RSA:
 365     case schan_kx_ECDHE_ECDSA:
 366     case schan_kx_ECDHE_RSA:        return CALG_ECDH;
 367     case schan_kx_NULL:             return 0;
 368     case schan_kx_RSA:              return CALG_RSA_KEYX;
 369
 370     case schan_kx_DH_anon_EXPORT:
 371     case schan_kx_DH_anon:
 372     case schan_kx_DH_DSS_EXPORT:
 373     case schan_kx_DH_DSS:
 374     case schan_kx_DH_RSA_EXPORT:
 375     case schan_kx_DH_RSA:
 376     case schan_kx_FORTEZZA_DMS:
 377     case schan_kx_RSA_EXPORT:
 378         FIXME("Don't know CALG for key exchange algorithm %d for cipher suite %#x, returning 0\n", c->kx_alg, (unsigned)c->suite);
 379         return 0;
 380
 381     default:
 382         FIXME("Unknown key exchange algorithm %d for cipher suite %#x, returning 0\n", c->kx_alg, (unsigned)c->suite);
 383         return 0;
 384     }
 385 }
 386
 387
 388 /* schan_pull_adapter
 389  *      Callback registered with SSLSetIOFuncs as the read function for a
 390  *      session.  Reads data from the session connection.  Conforms to the
 391  *      SSLReadFunc type.
 392  *
 393  *  transport - The session connection
 394  *  buff - The buffer into which to store the read data.  Must be at least
 395  *         *buff_len bytes in length.
 396  *  *buff_len - On input, the desired length to read.  On successful return,
 397  *              the number of bytes actually read.
 398  *
 399  *  Returns:
 400  *      noErr on complete success meaning the requested length was successfully
 401  *          read.
 402  *      errSSLWouldBlock when the requested length could not be read without
 403  *          blocking.  *buff_len indicates how much was actually read.  The
 404  *          caller should try again if/when they want to read more.
 405  *      errSSLClosedGraceful when the connection has closed and there's no
 406  *          more data to be read.
 407  *      other error code for failure.
 408  */
 409 static OSStatus schan_pull_adapter(SSLConnectionRef transport, void *buff,
 410                                    SIZE_T *buff_len)
 411 {
 412     struct mac_session *s = (struct mac_session*)transport;
 413     size_t requested = *buff_len;
 414     int status;
 415     OSStatus ret;
 416
 417     TRACE("(%p/%p, %p, %p/%lu)\n", s, s->transport, buff, buff_len, *buff_len);
 418
 419     status = schan_pull(s->transport, buff, buff_len);
 420     if (status == 0)
 421     {
 422         if (*buff_len == 0)
 423         {
 424             TRACE("Connection closed\n");
 425             ret = errSSLClosedGraceful;
 426         }
 427         else if (*buff_len < requested)
 428         {
 429             TRACE("Pulled %lu bytes before would block\n", *buff_len);
 430             ret = errSSLWouldBlock;
 431         }
 432         else
 433         {
 434             TRACE("Pulled %lu bytes\n", *buff_len);
 435             ret = noErr;
 436         }
 437     }
 438     else if (status == EAGAIN)
 439     {
 440         TRACE("Would block before being able to pull anything\n");
 441         ret = errSSLWouldBlock;
 442     }
 443     else
 444     {
 445         FIXME("Unknown status code from schan_pull: %d\n", status);
 446         ret = ioErr;
 447     }
 448
 449     return ret;
 450 }
 451
 452 /* schan_push_adapter
 453  *      Callback registered with SSLSetIOFuncs as the write function for a
 454  *      session.  Writes data to the session connection.  Conforms to the
 455  *      SSLWriteFunc type.
 456  *
 457  *  transport - The session connection
 458  *  buff - The buffer of data to write.  Must be at least *buff_len bytes in length.
 459  *  *buff_len - On input, the desired length to write.  On successful return,
 460  *              the number of bytes actually written.
 461  *
 462  *  Returns:
 463  *      noErr on complete or partial success; *buff_len indicates how much data
 464  *          was actually written, which may be less than requrested.
 465  *      errSSLWouldBlock when no data could be written without blocking.  The
 466  *          caller should try again.
 467  *      other error code for failure.
 468  */
 469 static OSStatus schan_push_adapter(SSLConnectionRef transport, const void *buff,
 470                                        SIZE_T *buff_len)
 471 {
 472     struct mac_session *s = (struct mac_session*)transport;
 473     int status;
 474     OSStatus ret;
 475
 476     TRACE("(%p/%p, %p, %p/%lu)\n", s, s->transport, buff, buff_len, *buff_len);
 477
 478     status = schan_push(s->transport, buff, buff_len);
 479     if (status == 0)
 480     {
 481         TRACE("Pushed %lu bytes\n", *buff_len);
 482         ret = noErr;
 483     }
 484     else if (status == EAGAIN)
 485     {
 486         TRACE("Would block before being able to push anything\n");
 487         ret = errSSLWouldBlock;
 488     }
 489     else
 490     {
 491         FIXME("Unknown status code from schan_push: %d\n", status);
 492         ret = ioErr;
 493     }
 494
 495     return ret;
 496 }
 497
 498
 499 BOOL schan_imp_create_session(schan_imp_session *session, BOOL is_server,
 500                               schan_imp_certificate_credentials cred)
 501 {
 502     struct mac_session *s;
 503     OSStatus status;
 504
 505     TRACE("(%p, %d)\n", session, is_server);
 506
 507     s = HeapAlloc(GetProcessHeap(), 0, sizeof(*s));
 508     if (!s)
 509         return FALSE;
 510
 511     status = SSLNewContext(is_server, &s->context);
 512     if (status != noErr)
 513     {
 514         ERR("Failed to create session context: %ld\n", (long)status);
 515         goto fail;
 516     }
 517
 518     status = SSLSetConnection(s->context, s);
 519     if (status != noErr)
 520     {
 521         ERR("Failed to set session connection: %ld\n", (long)status);
 522         goto fail;
 523     }
 524
 525     status = SSLSetEnableCertVerify(s->context, FALSE);
 526     if (status != noErr)
 527     {
 528         ERR("Failed to disable certificate verification: %ld\n", (long)status);
 529         goto fail;
 530     }
 531
 532     status = SSLSetProtocolVersionEnabled(s->context, kSSLProtocol2, FALSE);
 533     if (status != noErr)
 534     {
 535         ERR("Failed to disable SSL version 2: %ld\n", (long)status);
 536         goto fail;
 537     }
 538
 539     status = SSLSetIOFuncs(s->context, schan_pull_adapter, schan_push_adapter);
 540     if (status != noErr)
 541     {
 542         ERR("Failed to set session I/O funcs: %ld\n", (long)status);
 543         goto fail;
 544     }
 545
 546     TRACE("    -> %p/%p\n", s, s->context);
 547
 548     *session = (schan_imp_session)s;
 549     return TRUE;
 550
 551 fail:
 552     HeapFree(GetProcessHeap(), 0, s);
 553     return FALSE;
 554 }
 555
 556 void schan_imp_dispose_session(schan_imp_session session)
 557 {
 558     struct mac_session *s = (struct mac_session*)session;
 559     OSStatus status;
 560
 561     TRACE("(%p/%p)\n", s, s->context);
 562
 563     status = SSLDisposeContext(s->context);
 564     if (status != noErr)
 565         ERR("Failed to dispose of session context: %ld\n", status);
 566     HeapFree(GetProcessHeap(), 0, s);
 567 }
 568
 569 void schan_imp_set_session_transport(schan_imp_session session,
 570                                      struct schan_transport *t)
 571 {
 572     struct mac_session *s = (struct mac_session*)session;
 573
 574     TRACE("(%p/%p, %p)\n", s, s->context, t);
 575
 576     s->transport = t;
 577 }
 578
 579 SECURITY_STATUS schan_imp_handshake(schan_imp_session session)
 580 {
 581     struct mac_session *s = (struct mac_session*)session;
 582     OSStatus status;
 583
 584     TRACE("(%p/%p)\n", s, s->context);
 585
 586     status = SSLHandshake(s->context);
 587     if (status == noErr)
 588     {
 589         TRACE("Handshake completed\n");
 590         return SEC_E_OK;
 591     }
 592     else if (status == errSSLWouldBlock)
 593     {
 594         TRACE("Continue...\n");
 595         return SEC_I_CONTINUE_NEEDED;
 596     }
 597     else if (errSecErrnoBase <= status && status <= errSecErrnoLimit)
 598     {
 599         ERR("Handshake failed: %s\n", strerror(status));
 600         return SEC_E_INTERNAL_ERROR;
 601     }
 602     else
 603     {
 604         ERR("Handshake failed: %ld\n", (long)status);
 605         cssmPerror("SSLHandshake", status);
 606         return SEC_E_INTERNAL_ERROR;
 607     }
 608
 609     /* Never reached */
 610     return SEC_E_OK;
 611 }
 612
 613 unsigned int schan_imp_get_session_cipher_block_size(schan_imp_session session)
 614 {
 615     struct mac_session* s = (struct mac_session*)session;
 616     SSLCipherSuite cipherSuite;
 617     const struct cipher_suite* c;
 618     OSStatus status;
 619
 620     TRACE("(%p/%p)\n", s, s->context);
 621
 622     status = SSLGetNegotiatedCipher(s->context, &cipherSuite);
 623     if (status != noErr)
 624     {
 625         ERR("Failed to get session cipher suite: %ld\n", status);
 626         return 0;
 627     }
 628
 629     c = get_cipher_suite(cipherSuite);
 630     if (!c)
 631     {
 632         ERR("Unknown session cipher suite: %#x\n", (unsigned int)cipherSuite);
 633         return 0;
 634     }
 635
 636     switch (c->enc_alg)
 637     {
 638     case schan_enc_3DES_EDE_CBC:    return 64;
 639     case schan_enc_AES_128_CBC:     return 128;
 640     case schan_enc_AES_256_CBC:     return 128;
 641     case schan_enc_DES_CBC:         return 64;
 642     case schan_enc_DES40_CBC:       return 64;
 643     case schan_enc_NULL:            return 0;
 644     case schan_enc_RC2_CBC_40:      return 64;
 645     case schan_enc_RC2_CBC:         return 64;
 646     case schan_enc_RC4_128:         return 0;
 647     case schan_enc_RC4_40:          return 0;
 648
 649     case schan_enc_FORTEZZA_CBC:
 650     case schan_enc_IDEA_CBC:
 651         FIXME("Don't know block size for encryption algorithm %d, returning 0\n", c->enc_alg);
 652         return 0;
 653
 654     default:
 655         FIXME("Unknown encryption algorithm %d for cipher suite %#x, returning 0\n", c->enc_alg, (unsigned int)c->suite);
 656         return 0;
 657     }
 658 }
 659
 660 unsigned int schan_imp_get_max_message_size(schan_imp_session session)
 661 {
 662     FIXME("Returning 1 << 14.\n");
 663     return 1 << 14;
 664 }
 665
 666 SECURITY_STATUS schan_imp_get_connection_info(schan_imp_session session,
 667                                               SecPkgContext_ConnectionInfo *info)
 668 {
 669     struct mac_session* s = (struct mac_session*)session;
 670     SSLCipherSuite cipherSuite;
 671     const struct cipher_suite* c;
 672     OSStatus status;
 673
 674     TRACE("(%p/%p, %p)\n", s, s->context, info);
 675
 676     status = SSLGetNegotiatedCipher(s->context, &cipherSuite);
 677     if (status != noErr)
 678     {
 679         ERR("Failed to get session cipher suite: %ld\n", status);
 680         return SEC_E_INTERNAL_ERROR;
 681     }
 682
 683     c = get_cipher_suite(cipherSuite);
 684     if (!c)
 685     {
 686         ERR("Unknown session cipher suite: %#x\n", (unsigned int)cipherSuite);
 687         return SEC_E_INTERNAL_ERROR;
 688     }
 689
 690     info->dwProtocol = schan_get_session_protocol(s);
 691     info->aiCipher = schan_get_cipher_algid(c);
 692     info->dwCipherStrength = schan_get_cipher_key_size(c);
 693     info->aiHash = schan_get_mac_algid(c);
 694     info->dwHashStrength = schan_get_mac_key_size(c);
 695     info->aiExch = schan_get_kx_algid(c);
 696     /* FIXME: info->dwExchStrength? */
 697     info->dwExchStrength = 0;
 698
 699     return SEC_E_OK;
 700 }
 701
 702 #ifndef HAVE_SSLCOPYPEERCERTIFICATES
 703 static void schan_imp_cf_release(const void *arg, void *ctx)
 704 {
 705     CFRelease(arg);
 706 }
 707 #endif
 708
 709 SECURITY_STATUS schan_imp_get_session_peer_certificate(schan_imp_session session,
 710                                                        PCCERT_CONTEXT *cert)
 711 {
 712     struct mac_session* s = (struct mac_session*)session;
 713     SECURITY_STATUS ret = SEC_E_INTERNAL_ERROR;
 714     CFArrayRef certs;
 715     OSStatus status;
 716
 717     TRACE("(%p/%p, %p)\n", s, s->context, cert);
 718
 719 #ifdef HAVE_SSLCOPYPEERCERTIFICATES
 720     status = SSLCopyPeerCertificates(s->context, &certs);
 721 #else
 722     status = SSLGetPeerCertificates(s->context, &certs);
 723 #endif
 724     if (status == noErr && certs)
 725     {
 726         SecCertificateRef mac_cert;
 727         CFDataRef data;
 728         if (CFArrayGetCount(certs) &&
 729             (mac_cert = (SecCertificateRef)CFArrayGetValueAtIndex(certs, 0)) &&
 730             (SecKeychainItemExport(mac_cert, kSecFormatX509Cert, 0, NULL, &data) == noErr))
 731         {
 732             *cert = CertCreateCertificateContext(X509_ASN_ENCODING,
 733                     CFDataGetBytePtr(data), CFDataGetLength(data));
 734             if (*cert)
 735                 ret = SEC_E_OK;
 736             else
 737             {
 738                 ret = GetLastError();
 739                 WARN("CertCreateCertificateContext failed: %x\n", ret);
 740             }
 741             CFRelease(data);
 742         }
 743         else
 744             WARN("Couldn't extract certificate data\n");
 745 #ifndef HAVE_SSLCOPYPEERCERTIFICATES
 746         /* This is why SSLGetPeerCertificates was deprecated */
 747         CFArrayApplyFunction(certs, CFRangeMake(0, CFArrayGetCount(certs)),
 748                              schan_imp_cf_release, NULL);
 749 #endif
 750         CFRelease(certs);
 751     }
 752     else
 753         WARN("SSLCopyPeerCertificates failed: %ld\n", (long)status);
 754
 755     return ret;
 756 }
 757
 758 SECURITY_STATUS schan_imp_send(schan_imp_session session, const void *buffer,
 759                                SIZE_T *length)
 760 {
 761     struct mac_session* s = (struct mac_session*)session;
 762     OSStatus status;
 763
 764     TRACE("(%p/%p, %p, %p/%lu)\n", s, s->context, buffer, length, *length);
 765
 766     status = SSLWrite(s->context, buffer, *length, length);
 767     if (status == noErr)
 768         TRACE("Wrote %lu bytes\n", *length);
 769     else if (status == errSSLWouldBlock)
 770     {
 771         if (!*length)
 772         {
 773             TRACE("Would block before being able to write anything\n");
 774             return SEC_I_CONTINUE_NEEDED;
 775         }
 776         else
 777             TRACE("Wrote %lu bytes before would block\n", *length);
 778     }
 779     else
 780     {
 781         WARN("SSLWrite failed: %ld\n", (long)status);
 782         return SEC_E_INTERNAL_ERROR;
 783     }
 784
 785     return SEC_E_OK;
 786 }
 787
 788 SECURITY_STATUS schan_imp_recv(schan_imp_session session, void *buffer,
 789                                SIZE_T *length)
 790 {
 791     struct mac_session* s = (struct mac_session*)session;
 792     OSStatus status;
 793
 794     TRACE("(%p/%p, %p, %p/%lu)\n", s, s->context, buffer, length, *length);
 795
 796     status = SSLRead(s->context, buffer, *length, length);
 797     if (status == noErr)
 798         TRACE("Read %lu bytes\n", *length);
 799     else if (status == errSSLWouldBlock)
 800     {
 801         if (!*length)
 802         {
 803             TRACE("Would block before being able to read anything\n");
 804             return SEC_I_CONTINUE_NEEDED;
 805         }
 806         else
 807             TRACE("Read %lu bytes before would block\n", *length);
 808     }
 809     else
 810     {
 811         WARN("SSLRead failed: %ld\n", (long)status);
 812         return SEC_E_INTERNAL_ERROR;
 813     }
 814
 815     return SEC_E_OK;
 816 }
 817
 818 BOOL schan_imp_allocate_certificate_credentials(schan_imp_certificate_credentials *c)
 819 {
 820     /* The certificate is never really used for anything. */
 821     *c = NULL;
 822     return TRUE;
 823 }
 824
 825 void schan_imp_free_certificate_credentials(schan_imp_certificate_credentials c)
 826 {
 827 }
 828
 829 BOOL schan_imp_init(void)
 830 {
 831     TRACE("()\n");
 832     return TRUE;
 833 }
 834
 835 void schan_imp_deinit(void)
 836 {
 837     TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE_SECURITY_SECURITY_H */