OSX/libsecurity_ssl/regressions/ssl-51-state.c

   1 //
   2 //  ssl-51-state.c
   3 //  libsecurity_ssl
   4 //
   5
   6 #include <stdbool.h>
   7 #include <pthread.h>
   8 #include <fcntl.h>
   9 #include <sys/mman.h>
  10 #include <unistd.h>
  11
  12 #include <CoreFoundation/CoreFoundation.h>
  13
  14 #include <AssertMacros.h>
  15 #include <Security/SecureTransportPriv.h> /* SSLSetOption */
  16 #include <Security/SecureTransport.h>
  17 #include <Security/SecPolicy.h>
  18 #include <Security/SecTrust.h>
  19 #include <Security/SecIdentity.h>
  20 #include <Security/SecIdentityPriv.h>
  21 #include <Security/SecCertificatePriv.h>
  22 #include <Security/SecKeyPriv.h>
  23 #include <Security/SecItem.h>
  24 #include <Security/SecRandom.h>
  25
  26 #include <string.h>
  27 #include <sys/types.h>
  28 #include <sys/socket.h>
  29 #include <errno.h>
  30 #include <stdlib.h>
  31 #include <mach/mach_time.h>
  32
  33 #if TARGET_OS_IPHONE
  34 #include <Security/SecRSAKey.h>
  35 #endif
  36
  37 #include "ssl_regressions.h"
  38 #include "ssl-utils.h"
  39
  40 #include <tls_stream_parser.h>
  41 #include <tls_handshake.h>
  42 #include <tls_record.h>
  43
  44 #include <sys/queue.h>
  45
  46
  47 #define test_printf(x...)
  48
  49 /* extern struct ccrng_state *ccDRBGGetRngState(); */
  50 #include <CommonCrypto/CommonRandomSPI.h>
  51 #define CCRNGSTATE ccDRBGGetRngState()
  52
  53 struct RecQueueItem {
  54     STAILQ_ENTRY(RecQueueItem) next; /* link to next queued entry or NULL */
  55     tls_buffer                 record;
  56     size_t                     offset; /* byte reads from this one */
  57 };
  58
  59 typedef struct {
  60     SSLContextRef st;
  61     tls_stream_parser_t parser;
  62     tls_record_t record;
  63     tls_handshake_t hdsk;
  64     STAILQ_HEAD(, RecQueueItem) rec_queue; // coretls server queue packet in this queue
  65     int ready_count;
  66 } ssl_test_handle;
  67
  68
  69 static
  70 int tls_buffer_alloc(tls_buffer *buf, size_t length)
  71 {
  72     buf->data = malloc(length);
  73     if(!buf->data) return -ENOMEM;
  74     buf->length = length;
  75     return 0;
  76 }
  77
  78 static
  79 int tls_buffer_free(tls_buffer *buf)
  80 {
  81     free(buf->data);
  82     buf->data = NULL;
  83     buf->length = 0;
  84     return 0;
  85 }
  86
  87 #pragma mark -
  88 #pragma mark SecureTransport support
  89
  90 #if 0
  91 static void hexdump(const char *s, const uint8_t *bytes, size_t len) {
  92         size_t ix;
  93     printf("socket %s(%p, %lu)\n", s, bytes, len);
  94         for (ix = 0; ix < len; ++ix) {
  95         if (!(ix % 16))
  96             printf("\n");
  97                 printf("%02X ", bytes[ix]);
  98         }
  99         printf("\n");
 100 }
 101 #else
 102 #define hexdump(string, bytes, len)
 103 #endif
 104
 105 static OSStatus SocketWrite(SSLConnectionRef h, const void *data, size_t *length)
 106 {
 107     ssl_test_handle *handle =(ssl_test_handle *)h;
 108
 109         size_t len = *length;
 110         uint8_t *ptr = (uint8_t *)data;
 111
 112     tls_buffer buffer;
 113     buffer.data = ptr;
 114     buffer.length = len;
 115     return tls_stream_parser_parse(handle->parser, buffer);
 116 }
 117
 118 static OSStatus SocketRead(SSLConnectionRef h, void *data, size_t *length)
 119 {
 120     ssl_test_handle *handle =(ssl_test_handle *)h;
 121
 122     test_printf("%s: %p requesting len=%zd\n", __FUNCTION__, h, *length);
 123
 124     struct RecQueueItem *item = STAILQ_FIRST(&handle->rec_queue);
 125
 126     if(item==NULL) {
 127         test_printf("%s: %p no data available\n", __FUNCTION__, h);
 128         return errSSLWouldBlock;
 129     }
 130
 131     size_t avail = item->record.length - item->offset;
 132
 133     test_printf("%s: %p %zd bytes available in %p\n", __FUNCTION__, h, avail, item);
 134
 135     if(avail > *length) {
 136         memcpy(data, item->record.data+item->offset, *length);
 137         item->offset += *length;
 138     } else {
 139         memcpy(data, item->record.data+item->offset, avail);
 140         *length = avail;
 141         STAILQ_REMOVE_HEAD(&handle->rec_queue, next);
 142         tls_buffer_free(&item->record);
 143         free(item);
 144     }
 145
 146     test_printf("%s: %p %zd bytes read\n", __FUNCTION__, h, *length);
 147
 148
 149     return 0;
 150 }
 151
 152 static int process(tls_stream_parser_ctx_t ctx, tls_buffer record)
 153 {
 154     ssl_test_handle *h = (ssl_test_handle *)ctx;
 155     tls_buffer decrypted;
 156     uint8_t ct;
 157     int err;
 158
 159     test_printf("%s: %p processing %zd bytes\n", __FUNCTION__, ctx, record.length);
 160
 161
 162     decrypted.length = tls_record_decrypted_size(h->record, record.length);
 163     decrypted.data = malloc(decrypted.length);
 164
 165     require_action(decrypted.data, errOut, err=-ENOMEM);
 166     require_noerr((err=tls_record_decrypt(h->record, record, &decrypted, &ct)), errOut);
 167
 168     test_printf("%s: %p decrypted %zd bytes, ct=%d\n", __FUNCTION__, ctx, decrypted.length, ct);
 169
 170     err=tls_handshake_process(h->hdsk, decrypted, ct);
 171
 172     test_printf("%s: %p processed, err=%d\n", __FUNCTION__, ctx, err);
 173
 174 errOut:
 175     return err;
 176 }
 177
 178 static int
 179 tls_handshake_write_callback(tls_handshake_ctx_t ctx, const tls_buffer data, uint8_t content_type)
 180 {
 181     int err = 0;
 182     ssl_test_handle *handle = (ssl_test_handle *)ctx;
 183
 184     test_printf("%s: %p writing data ct=%d, len=%zd\n", __FUNCTION__, ctx, content_type, data.length);
 185
 186     struct RecQueueItem *item = malloc(sizeof(struct RecQueueItem));
 187     require_action(item, errOut, err=-ENOMEM);
 188
 189     err=tls_buffer_alloc(&item->record, tls_record_encrypted_size(handle->record, content_type, data.length));
 190     require_noerr(err, errOut);
 191
 192     err=tls_record_encrypt(handle->record, data, content_type, &item->record);
 193     require_noerr(err, errOut);
 194
 195     item->offset = 0;
 196
 197     test_printf("%s: %p queing %zd encrypted bytes, item=%p\n", __FUNCTION__, ctx, item->record.length, item);
 198
 199     STAILQ_INSERT_TAIL(&handle->rec_queue, item, next);
 200
 201     return 0;
 202
 203 errOut:
 204     if(item) {
 205         tls_buffer_free(&item->record);
 206         free(item);
 207     }
 208     return err;
 209 }
 210
 211
 212 static int
 213 tls_handshake_message_callback(tls_handshake_ctx_t ctx, tls_handshake_message_t event)
 214 {
 215     ssl_test_handle __unused *handle = (ssl_test_handle *)ctx;
 216
 217     test_printf("%s: %p event = %d\n", __FUNCTION__, handle, event);
 218
 219     int err = 0;
 220
 221     return err;
 222 }
 223
 224
 225
 226 static uint8_t appdata[] = "appdata";
 227
 228 tls_buffer appdata_buffer = {
 229     .data = appdata,
 230     .length = sizeof(appdata),
 231 };
 232
 233
 234 static void
 235 tls_handshake_ready_callback(tls_handshake_ctx_t ctx, bool write, bool ready)
 236 {
 237     ssl_test_handle *handle = (ssl_test_handle *)ctx;
 238
 239     test_printf("%s: %p %s ready=%d\n", __FUNCTION__, handle, write?"write":"read", ready);
 240
 241     if(ready) {
 242         if(write) {
 243             if(handle->ready_count == 0) {
 244                 tls_handshake_request_renegotiation(handle->hdsk);
 245             } else {
 246                 tls_handshake_write_callback(ctx, appdata_buffer, tls_record_type_AppData);
 247             }
 248             handle->ready_count++;;
 249         }
 250     }
 251 }
 252
 253 static int
 254 tls_handshake_set_retransmit_timer_callback(tls_handshake_ctx_t ctx, int attempt)
 255 {
 256     ssl_test_handle __unused *handle = (ssl_test_handle *)ctx;
 257
 258     test_printf("%s: %p attempt = %d\n", __FUNCTION__, handle, attempt);
 259
 260     return -1;
 261 }
 262
 263 static
 264 int mySSLRecordInitPendingCiphersFunc(tls_handshake_ctx_t ref,
 265                                       uint16_t            selectedCipher,
 266                                       bool                server,
 267                                       tls_buffer           key)
 268 {
 269     ssl_test_handle *handle = (ssl_test_handle *)ref;
 270
 271     test_printf("%s: %p, cipher=%04x, server=%d\n", __FUNCTION__, ref, selectedCipher, server);
 272     return tls_record_init_pending_ciphers(handle->record, selectedCipher, server, key);
 273 }
 274
 275 static
 276 int mySSLRecordAdvanceWriteCipherFunc(tls_handshake_ctx_t ref)
 277 {
 278     ssl_test_handle *handle = (ssl_test_handle *)ref;
 279     test_printf("%s: %p\n", __FUNCTION__, ref);
 280     return tls_record_advance_write_cipher(handle->record);
 281 }
 282
 283 static
 284 int mySSLRecordRollbackWriteCipherFunc(tls_handshake_ctx_t ref)
 285 {
 286     ssl_test_handle *handle = (ssl_test_handle *)ref;
 287     test_printf("%s: %p\n", __FUNCTION__, ref);
 288     return tls_record_rollback_write_cipher(handle->record);
 289 }
 290
 291 static
 292 int mySSLRecordAdvanceReadCipherFunc(tls_handshake_ctx_t ref)
 293 {
 294     ssl_test_handle *handle = (ssl_test_handle *)ref;
 295     test_printf("%s: %p\n", __FUNCTION__, ref);
 296     return tls_record_advance_read_cipher(handle->record);
 297 }
 298
 299 static
 300 int mySSLRecordSetProtocolVersionFunc(tls_handshake_ctx_t ref,
 301                                       tls_protocol_version  protocolVersion)
 302 {
 303     ssl_test_handle *handle = (ssl_test_handle *)ref;
 304     test_printf("%s: %p, version=%04x\n", __FUNCTION__, ref, protocolVersion);
 305     return tls_record_set_protocol_version(handle->record, protocolVersion);
 306 }
 307
 308
 309 static int
 310 tls_handshake_save_session_data_callback(tls_handshake_ctx_t ctx, tls_buffer sessionKey, tls_buffer sessionData)
 311 {
 312     ssl_test_handle __unused *handle = (ssl_test_handle *)ctx;
 313
 314     test_printf("%s: %p\n", __FUNCTION__, handle);
 315
 316     return -1;
 317 }
 318
 319 static int
 320 tls_handshake_load_session_data_callback(tls_handshake_ctx_t ctx, tls_buffer sessionKey, tls_buffer *sessionData)
 321 {
 322     ssl_test_handle __unused *handle = (ssl_test_handle *)ctx;
 323
 324     test_printf("%s: %p\n", __FUNCTION__, handle);
 325
 326     return -1;
 327 }
 328
 329 static int
 330 tls_handshake_delete_session_data_callback(tls_handshake_ctx_t ctx, tls_buffer sessionKey)
 331 {
 332     ssl_test_handle __unused *handle = (ssl_test_handle *)ctx;
 333
 334     test_printf("%s: %p\n", __FUNCTION__, handle);
 335
 336     return -1;
 337 }
 338
 339 static int
 340 tls_handshake_delete_all_sessions_callback(tls_handshake_ctx_t ctx)
 341 {
 342     ssl_test_handle __unused *handle = (ssl_test_handle *)ctx;
 343
 344     test_printf("%s: %p\n", __FUNCTION__, handle);
 345
 346     return -1;
 347 }
 348
 349 /* TLS callbacks */
 350 tls_handshake_callbacks_t tls_handshake_callbacks = {
 351     .write = tls_handshake_write_callback,
 352     .message = tls_handshake_message_callback,
 353     .ready = tls_handshake_ready_callback,
 354     .set_retransmit_timer = tls_handshake_set_retransmit_timer_callback,
 355     .init_pending_cipher = mySSLRecordInitPendingCiphersFunc,
 356     .advance_write_cipher = mySSLRecordAdvanceWriteCipherFunc,
 357     .rollback_write_cipher = mySSLRecordRollbackWriteCipherFunc,
 358     .advance_read_cipher = mySSLRecordAdvanceReadCipherFunc,
 359     .set_protocol_version = mySSLRecordSetProtocolVersionFunc,
 360     .load_session_data = tls_handshake_load_session_data_callback,
 361     .save_session_data = tls_handshake_save_session_data_callback,
 362     .delete_session_data = tls_handshake_delete_session_data_callback,
 363     .delete_all_sessions = tls_handshake_delete_all_sessions_callback,
 364 };
 365
 366
 367 static void
 368 ssl_test_handle_destroy(ssl_test_handle *handle)
 369 {
 370     if(handle) {
 371         if(handle->parser) tls_stream_parser_destroy(handle->parser);
 372         if(handle->record) tls_record_destroy(handle->record);
 373         if(handle->hdsk) tls_handshake_destroy(handle->hdsk);
 374         if(handle->st) CFRelease(handle->st);
 375         free(handle);
 376     }
 377 }
 378
 379 static uint16_t ciphers[] = {
 380     TLS_PSK_WITH_AES_128_CBC_SHA,
 381 };
 382 static int nciphers = sizeof(ciphers)/sizeof(ciphers[0]);
 383
 384 static SSLCipherSuite ciphersuites[] = {
 385     TLS_PSK_WITH_AES_128_CBC_SHA,
 386 };
 387 static int nciphersuites = sizeof(ciphersuites)/sizeof(ciphersuites[0]);
 388
 389
 390
 391 static uint8_t shared_secret[] = "secret";
 392
 393 tls_buffer psk_secret = {
 394     .data = shared_secret,
 395     .length = sizeof(shared_secret),
 396 };
 397
 398 static ssl_test_handle *
 399 ssl_test_handle_create(bool server)
 400 {
 401     ssl_test_handle *handle = calloc(1, sizeof(ssl_test_handle));
 402     SSLContextRef ctx = SSLCreateContext(kCFAllocatorDefault, server?kSSLServerSide:kSSLClientSide, kSSLStreamType);
 403
 404     require(handle, out);
 405     require(ctx, out);
 406
 407     require_noerr(SSLSetIOFuncs(ctx, (SSLReadFunc)SocketRead, (SSLWriteFunc)SocketWrite), out);
 408     require_noerr(SSLSetConnection(ctx, (SSLConnectionRef)handle), out);
 409     require_noerr(SSLSetSessionOption(ctx, kSSLSessionOptionBreakOnServerAuth, true), out);
 410     require_noerr(SSLSetEnabledCiphers(ctx, ciphersuites, nciphersuites), out);
 411     require_noerr(SSLSetPSKSharedSecret(ctx, shared_secret, sizeof(shared_secret)), out);
 412
 413     handle->st = ctx;
 414     handle->parser = tls_stream_parser_create(handle, process);
 415     handle->record = tls_record_create(false, CCRNGSTATE);
 416     handle->hdsk = tls_handshake_create(false, true); // server.
 417
 418     require_noerr(tls_handshake_set_ciphersuites(handle->hdsk, ciphers, nciphers), out);
 419     require_noerr(tls_handshake_set_callbacks(handle->hdsk, &tls_handshake_callbacks, handle), out);
 420     require_noerr(tls_handshake_set_psk_secret(handle->hdsk, &psk_secret), out);
 421     require_noerr(tls_handshake_set_renegotiation(handle->hdsk, true), out);
 422
 423     // Initialize the record queue
 424     STAILQ_INIT(&handle->rec_queue);
 425
 426     return handle;
 427
 428 out:
 429     if (handle) free(handle);
 430     if (ctx) CFRelease(ctx);
 431     return NULL;
 432 }
 433
 434 static void
 435 tests(void)
 436 {
 437     OSStatus ortn;
 438
 439     ssl_test_handle *client;
 440     SSLSessionState state;
 441
 442     client = ssl_test_handle_create(false);
 443
 444     require_action(client, out, ortn = -1);
 445
 446     ortn = SSLGetSessionState(client->st, &state);
 447     require_noerr(ortn, out);
 448     is(state, kSSLIdle, "State should be Idle");
 449
 450     do {
 451         ortn = SSLHandshake(client->st);
 452         test_printf("SSLHandshake returned err=%d\n", (int)ortn);
 453
 454         require_noerr(SSLGetSessionState(client->st, &state), out);
 455
 456         if (ortn == errSSLPeerAuthCompleted || ortn == errSSLWouldBlock)
 457         {
 458             require_action(state==kSSLHandshake, out, ortn = -1);
 459         }
 460
 461     } while(ortn==errSSLWouldBlock ||
 462             ortn==errSSLPeerAuthCompleted);
 463
 464
 465     is(ortn, 0, "Unexpected SSLHandshake exit code");
 466     is(state, kSSLConnected, "State should be Connected");
 467
 468     uint8_t buffer[128];
 469     size_t available = 0;
 470
 471     test_printf("Initial handshake done\n");
 472
 473     do {
 474         ortn = SSLRead(client->st, buffer, sizeof(buffer), &available);
 475         test_printf("SSLRead returned err=%d, avail=%zd\n", (int)ortn, available);
 476         require_noerr(SSLGetSessionState(client->st, &state), out);
 477
 478         if (ortn == errSSLPeerAuthCompleted)
 479         {
 480             require_action(state==kSSLHandshake, out, ortn = -1);
 481         }
 482
 483     } while(available==0);
 484
 485     is(ortn, 0, "Unexpected SSLRead exit code");
 486     is(state, kSSLConnected, "State should be Connected");
 487
 488
 489 out:
 490     is(ortn, 0, "Final result is non zero");
 491     ssl_test_handle_destroy(client);
 492
 493 }
 494
 495 int ssl_51_state(int argc, char *const *argv)
 496 {
 497
 498     plan_tests(6);
 499
 500     tests();
 501
 502     return 0;
 503 }