contrib/hostapd/src/tls/tlsv1_server.c

   1 /*
   2  * TLS v1.0/v1.1/v1.2 server (RFC 2246, RFC 4346, RFC 5246)
   3  * Copyright (c) 2006-2011, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "crypto/sha1.h"
  13 #include "crypto/tls.h"
  14 #include "tlsv1_common.h"
  15 #include "tlsv1_record.h"
  16 #include "tlsv1_server.h"
  17 #include "tlsv1_server_i.h"
  18
  19 /* TODO:
  20  * Support for a message fragmented across several records (RFC 2246, 6.2.1)
  21  */
  22
  23
  24 void tlsv1_server_alert(struct tlsv1_server *conn, u8 level, u8 description)
  25 {
  26         conn->alert_level = level;
  27         conn->alert_description = description;
  28 }
  29
  30
  31 int tlsv1_server_derive_keys(struct tlsv1_server *conn,
  32                              const u8 *pre_master_secret,
  33                              size_t pre_master_secret_len)
  34 {
  35         u8 seed[2 * TLS_RANDOM_LEN];
  36         u8 key_block[TLS_MAX_KEY_BLOCK_LEN];
  37         u8 *pos;
  38         size_t key_block_len;
  39
  40         if (pre_master_secret) {
  41                 wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: pre_master_secret",
  42                                 pre_master_secret, pre_master_secret_len);
  43                 os_memcpy(seed, conn->client_random, TLS_RANDOM_LEN);
  44                 os_memcpy(seed + TLS_RANDOM_LEN, conn->server_random,
  45                           TLS_RANDOM_LEN);
  46                 if (tls_prf(conn->rl.tls_version,
  47                             pre_master_secret, pre_master_secret_len,
  48                             "master secret", seed, 2 * TLS_RANDOM_LEN,
  49                             conn->master_secret, TLS_MASTER_SECRET_LEN)) {
  50                         wpa_printf(MSG_DEBUG, "TLSv1: Failed to derive "
  51                                    "master_secret");
  52                         return -1;
  53                 }
  54                 wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: master_secret",
  55                                 conn->master_secret, TLS_MASTER_SECRET_LEN);
  56         }
  57
  58         os_memcpy(seed, conn->server_random, TLS_RANDOM_LEN);
  59         os_memcpy(seed + TLS_RANDOM_LEN, conn->client_random, TLS_RANDOM_LEN);
  60         key_block_len = 2 * (conn->rl.hash_size + conn->rl.key_material_len +
  61                              conn->rl.iv_size);
  62         if (tls_prf(conn->rl.tls_version,
  63                     conn->master_secret, TLS_MASTER_SECRET_LEN,
  64                     "key expansion", seed, 2 * TLS_RANDOM_LEN,
  65                     key_block, key_block_len)) {
  66                 wpa_printf(MSG_DEBUG, "TLSv1: Failed to derive key_block");
  67                 return -1;
  68         }
  69         wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: key_block",
  70                         key_block, key_block_len);
  71
  72         pos = key_block;
  73
  74         /* client_write_MAC_secret */
  75         os_memcpy(conn->rl.read_mac_secret, pos, conn->rl.hash_size);
  76         pos += conn->rl.hash_size;
  77         /* server_write_MAC_secret */
  78         os_memcpy(conn->rl.write_mac_secret, pos, conn->rl.hash_size);
  79         pos += conn->rl.hash_size;
  80
  81         /* client_write_key */
  82         os_memcpy(conn->rl.read_key, pos, conn->rl.key_material_len);
  83         pos += conn->rl.key_material_len;
  84         /* server_write_key */
  85         os_memcpy(conn->rl.write_key, pos, conn->rl.key_material_len);
  86         pos += conn->rl.key_material_len;
  87
  88         /* client_write_IV */
  89         os_memcpy(conn->rl.read_iv, pos, conn->rl.iv_size);
  90         pos += conn->rl.iv_size;
  91         /* server_write_IV */
  92         os_memcpy(conn->rl.write_iv, pos, conn->rl.iv_size);
  93         pos += conn->rl.iv_size;
  94
  95         return 0;
  96 }
  97
  98
  99 /**
 100  * tlsv1_server_handshake - Process TLS handshake
 101  * @conn: TLSv1 server connection data from tlsv1_server_init()
 102  * @in_data: Input data from TLS peer
 103  * @in_len: Input data length
 104  * @out_len: Length of the output buffer.
 105  * Returns: Pointer to output data, %NULL on failure
 106  */
 107 u8 * tlsv1_server_handshake(struct tlsv1_server *conn,
 108                             const u8 *in_data, size_t in_len,
 109                             size_t *out_len)
 110 {
 111         const u8 *pos, *end;
 112         u8 *msg = NULL, *in_msg, *in_pos, *in_end, alert, ct;
 113         size_t in_msg_len;
 114         int used;
 115
 116         if (in_data == NULL || in_len == 0) {
 117                 wpa_printf(MSG_DEBUG, "TLSv1: No input data to server");
 118                 return NULL;
 119         }
 120
 121         pos = in_data;
 122         end = in_data + in_len;
 123         in_msg = os_malloc(in_len);
 124         if (in_msg == NULL)
 125                 return NULL;
 126
 127         /* Each received packet may include multiple records */
 128         while (pos < end) {
 129                 in_msg_len = in_len;
 130                 used = tlsv1_record_receive(&conn->rl, pos, end - pos,
 131                                             in_msg, &in_msg_len, &alert);
 132                 if (used < 0) {
 133                         wpa_printf(MSG_DEBUG, "TLSv1: Processing received "
 134                                    "record failed");
 135                         tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, alert);
 136                         goto failed;
 137                 }
 138                 if (used == 0) {
 139                         /* need more data */
 140                         wpa_printf(MSG_DEBUG, "TLSv1: Partial processing not "
 141                                    "yet supported");
 142                         tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, alert);
 143                         goto failed;
 144                 }
 145                 ct = pos[0];
 146
 147                 in_pos = in_msg;
 148                 in_end = in_msg + in_msg_len;
 149
 150                 /* Each received record may include multiple messages of the
 151                  * same ContentType. */
 152                 while (in_pos < in_end) {
 153                         in_msg_len = in_end - in_pos;
 154                         if (tlsv1_server_process_handshake(conn, ct, in_pos,
 155                                                            &in_msg_len) < 0)
 156                                 goto failed;
 157                         in_pos += in_msg_len;
 158                 }
 159
 160                 pos += used;
 161         }
 162
 163         os_free(in_msg);
 164         in_msg = NULL;
 165
 166         msg = tlsv1_server_handshake_write(conn, out_len);
 167
 168 failed:
 169         os_free(in_msg);
 170         if (conn->alert_level) {
 171                 if (conn->state == FAILED) {
 172                         /* Avoid alert loops */
 173                         wpa_printf(MSG_DEBUG, "TLSv1: Drop alert loop");
 174                         os_free(msg);
 175                         return NULL;
 176                 }
 177                 conn->state = FAILED;
 178                 os_free(msg);
 179                 msg = tlsv1_server_send_alert(conn, conn->alert_level,
 180                                               conn->alert_description,
 181                                               out_len);
 182         }
 183
 184         return msg;
 185 }
 186
 187
 188 /**
 189  * tlsv1_server_encrypt - Encrypt data into TLS tunnel
 190  * @conn: TLSv1 server connection data from tlsv1_server_init()
 191  * @in_data: Pointer to plaintext data to be encrypted
 192  * @in_len: Input buffer length
 193  * @out_data: Pointer to output buffer (encrypted TLS data)
 194  * @out_len: Maximum out_data length
 195  * Returns: Number of bytes written to out_data, -1 on failure
 196  *
 197  * This function is used after TLS handshake has been completed successfully to
 198  * send data in the encrypted tunnel.
 199  */
 200 int tlsv1_server_encrypt(struct tlsv1_server *conn,
 201                          const u8 *in_data, size_t in_len,
 202                          u8 *out_data, size_t out_len)
 203 {
 204         size_t rlen;
 205
 206         wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: Plaintext AppData",
 207                         in_data, in_len);
 208
 209         if (tlsv1_record_send(&conn->rl, TLS_CONTENT_TYPE_APPLICATION_DATA,
 210                               out_data, out_len, in_data, in_len, &rlen) < 0) {
 211                 wpa_printf(MSG_DEBUG, "TLSv1: Failed to create a record");
 212                 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL,
 213                                    TLS_ALERT_INTERNAL_ERROR);
 214                 return -1;
 215         }
 216
 217         return rlen;
 218 }
 219
 220
 221 /**
 222  * tlsv1_server_decrypt - Decrypt data from TLS tunnel
 223  * @conn: TLSv1 server connection data from tlsv1_server_init()
 224  * @in_data: Pointer to input buffer (encrypted TLS data)
 225  * @in_len: Input buffer length
 226  * @out_data: Pointer to output buffer (decrypted data from TLS tunnel)
 227  * @out_len: Maximum out_data length
 228  * Returns: Number of bytes written to out_data, -1 on failure
 229  *
 230  * This function is used after TLS handshake has been completed successfully to
 231  * receive data from the encrypted tunnel.
 232  */
 233 int tlsv1_server_decrypt(struct tlsv1_server *conn,
 234                          const u8 *in_data, size_t in_len,
 235                          u8 *out_data, size_t out_len)
 236 {
 237         const u8 *in_end, *pos;
 238         int used;
 239         u8 alert, *out_end, *out_pos, ct;
 240         size_t olen;
 241
 242         pos = in_data;
 243         in_end = in_data + in_len;
 244         out_pos = out_data;
 245         out_end = out_data + out_len;
 246
 247         while (pos < in_end) {
 248                 ct = pos[0];
 249                 olen = out_end - out_pos;
 250                 used = tlsv1_record_receive(&conn->rl, pos, in_end - pos,
 251                                             out_pos, &olen, &alert);
 252                 if (used < 0) {
 253                         wpa_printf(MSG_DEBUG, "TLSv1: Record layer processing "
 254                                    "failed");
 255                         tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, alert);
 256                         return -1;
 257                 }
 258                 if (used == 0) {
 259                         /* need more data */
 260                         wpa_printf(MSG_DEBUG, "TLSv1: Partial processing not "
 261                                    "yet supported");
 262                         tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, alert);
 263                         return -1;
 264                 }
 265
 266                 if (ct == TLS_CONTENT_TYPE_ALERT) {
 267                         if (olen < 2) {
 268                                 wpa_printf(MSG_DEBUG, "TLSv1: Alert "
 269                                            "underflow");
 270                                 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL,
 271                                                    TLS_ALERT_DECODE_ERROR);
 272                                 return -1;
 273                         }
 274                         wpa_printf(MSG_DEBUG, "TLSv1: Received alert %d:%d",
 275                                    out_pos[0], out_pos[1]);
 276                         if (out_pos[0] == TLS_ALERT_LEVEL_WARNING) {
 277                                 /* Continue processing */
 278                                 pos += used;
 279                                 continue;
 280                         }
 281
 282                         tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL,
 283                                            out_pos[1]);
 284                         return -1;
 285                 }
 286
 287                 if (ct != TLS_CONTENT_TYPE_APPLICATION_DATA) {
 288                         wpa_printf(MSG_DEBUG, "TLSv1: Unexpected content type "
 289                                    "0x%x", pos[0]);
 290                         tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL,
 291                                            TLS_ALERT_UNEXPECTED_MESSAGE);
 292                         return -1;
 293                 }
 294
 295                 out_pos += olen;
 296                 if (out_pos > out_end) {
 297                         wpa_printf(MSG_DEBUG, "TLSv1: Buffer not large enough "
 298                                    "for processing the received record");
 299                         tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL,
 300                                            TLS_ALERT_INTERNAL_ERROR);
 301                         return -1;
 302                 }
 303
 304                 pos += used;
 305         }
 306
 307         return out_pos - out_data;
 308 }
 309
 310
 311 /**
 312  * tlsv1_server_global_init - Initialize TLSv1 server
 313  * Returns: 0 on success, -1 on failure
 314  *
 315  * This function must be called before using any other TLSv1 server functions.
 316  */
 317 int tlsv1_server_global_init(void)
 318 {
 319         return crypto_global_init();
 320 }
 321
 322
 323 /**
 324  * tlsv1_server_global_deinit - Deinitialize TLSv1 server
 325  *
 326  * This function can be used to deinitialize the TLSv1 server that was
 327  * initialized by calling tlsv1_server_global_init(). No TLSv1 server functions
 328  * can be called after this before calling tlsv1_server_global_init() again.
 329  */
 330 void tlsv1_server_global_deinit(void)
 331 {
 332         crypto_global_deinit();
 333 }
 334
 335
 336 /**
 337  * tlsv1_server_init - Initialize TLSv1 server connection
 338  * @cred: Pointer to server credentials from tlsv1_server_cred_alloc()
 339  * Returns: Pointer to TLSv1 server connection data or %NULL on failure
 340  */
 341 struct tlsv1_server * tlsv1_server_init(struct tlsv1_credentials *cred)
 342 {
 343         struct tlsv1_server *conn;
 344         size_t count;
 345         u16 *suites;
 346
 347         conn = os_zalloc(sizeof(*conn));
 348         if (conn == NULL)
 349                 return NULL;
 350
 351         conn->cred = cred;
 352
 353         conn->state = CLIENT_HELLO;
 354
 355         if (tls_verify_hash_init(&conn->verify) < 0) {
 356                 wpa_printf(MSG_DEBUG, "TLSv1: Failed to initialize verify "
 357                            "hash");
 358                 os_free(conn);
 359                 return NULL;
 360         }
 361
 362         count = 0;
 363         suites = conn->cipher_suites;
 364         suites[count++] = TLS_RSA_WITH_AES_256_CBC_SHA;
 365         suites[count++] = TLS_RSA_WITH_AES_128_CBC_SHA;
 366         suites[count++] = TLS_RSA_WITH_3DES_EDE_CBC_SHA;
 367         suites[count++] = TLS_RSA_WITH_RC4_128_SHA;
 368         suites[count++] = TLS_RSA_WITH_RC4_128_MD5;
 369         conn->num_cipher_suites = count;
 370
 371         return conn;
 372 }
 373
 374
 375 static void tlsv1_server_clear_data(struct tlsv1_server *conn)
 376 {
 377         tlsv1_record_set_cipher_suite(&conn->rl, TLS_NULL_WITH_NULL_NULL);
 378         tlsv1_record_change_write_cipher(&conn->rl);
 379         tlsv1_record_change_read_cipher(&conn->rl);
 380         tls_verify_hash_free(&conn->verify);
 381
 382         crypto_public_key_free(conn->client_rsa_key);
 383         conn->client_rsa_key = NULL;
 384
 385         os_free(conn->session_ticket);
 386         conn->session_ticket = NULL;
 387         conn->session_ticket_len = 0;
 388         conn->use_session_ticket = 0;
 389
 390         os_free(conn->dh_secret);
 391         conn->dh_secret = NULL;
 392         conn->dh_secret_len = 0;
 393 }
 394
 395
 396 /**
 397  * tlsv1_server_deinit - Deinitialize TLSv1 server connection
 398  * @conn: TLSv1 server connection data from tlsv1_server_init()
 399  */
 400 void tlsv1_server_deinit(struct tlsv1_server *conn)
 401 {
 402         tlsv1_server_clear_data(conn);
 403         os_free(conn);
 404 }
 405
 406
 407 /**
 408  * tlsv1_server_established - Check whether connection has been established
 409  * @conn: TLSv1 server connection data from tlsv1_server_init()
 410  * Returns: 1 if connection is established, 0 if not
 411  */
 412 int tlsv1_server_established(struct tlsv1_server *conn)
 413 {
 414         return conn->state == ESTABLISHED;
 415 }
 416
 417
 418 /**
 419  * tlsv1_server_prf - Use TLS-PRF to derive keying material
 420  * @conn: TLSv1 server connection data from tlsv1_server_init()
 421  * @label: Label (e.g., description of the key) for PRF
 422  * @server_random_first: seed is 0 = client_random|server_random,
 423  * 1 = server_random|client_random
 424  * @out: Buffer for output data from TLS-PRF
 425  * @out_len: Length of the output buffer
 426  * Returns: 0 on success, -1 on failure
 427  */
 428 int tlsv1_server_prf(struct tlsv1_server *conn, const char *label,
 429                      int server_random_first, u8 *out, size_t out_len)
 430 {
 431         u8 seed[2 * TLS_RANDOM_LEN];
 432
 433         if (conn->state != ESTABLISHED)
 434                 return -1;
 435
 436         if (server_random_first) {
 437                 os_memcpy(seed, conn->server_random, TLS_RANDOM_LEN);
 438                 os_memcpy(seed + TLS_RANDOM_LEN, conn->client_random,
 439                           TLS_RANDOM_LEN);
 440         } else {
 441                 os_memcpy(seed, conn->client_random, TLS_RANDOM_LEN);
 442                 os_memcpy(seed + TLS_RANDOM_LEN, conn->server_random,
 443                           TLS_RANDOM_LEN);
 444         }
 445
 446         return tls_prf(conn->rl.tls_version,
 447                        conn->master_secret, TLS_MASTER_SECRET_LEN,
 448                        label, seed, 2 * TLS_RANDOM_LEN, out, out_len);
 449 }
 450
 451
 452 /**
 453  * tlsv1_server_get_cipher - Get current cipher name
 454  * @conn: TLSv1 server connection data from tlsv1_server_init()
 455  * @buf: Buffer for the cipher name
 456  * @buflen: buf size
 457  * Returns: 0 on success, -1 on failure
 458  *
 459  * Get the name of the currently used cipher.
 460  */
 461 int tlsv1_server_get_cipher(struct tlsv1_server *conn, char *buf,
 462                             size_t buflen)
 463 {
 464         char *cipher;
 465
 466         switch (conn->rl.cipher_suite) {
 467         case TLS_RSA_WITH_RC4_128_MD5:
 468                 cipher = "RC4-MD5";
 469                 break;
 470         case TLS_RSA_WITH_RC4_128_SHA:
 471                 cipher = "RC4-SHA";
 472                 break;
 473         case TLS_RSA_WITH_DES_CBC_SHA:
 474                 cipher = "DES-CBC-SHA";
 475                 break;
 476         case TLS_RSA_WITH_3DES_EDE_CBC_SHA:
 477                 cipher = "DES-CBC3-SHA";
 478                 break;
 479         case TLS_DH_anon_WITH_AES_128_CBC_SHA:
 480                 cipher = "ADH-AES-128-SHA";
 481                 break;
 482         case TLS_RSA_WITH_AES_256_CBC_SHA:
 483                 cipher = "AES-256-SHA";
 484                 break;
 485         case TLS_RSA_WITH_AES_128_CBC_SHA:
 486                 cipher = "AES-128-SHA";
 487                 break;
 488         default:
 489                 return -1;
 490         }
 491
 492         if (os_strlcpy(buf, cipher, buflen) >= buflen)
 493                 return -1;
 494         return 0;
 495 }
 496
 497
 498 /**
 499  * tlsv1_server_shutdown - Shutdown TLS connection
 500  * @conn: TLSv1 server connection data from tlsv1_server_init()
 501  * Returns: 0 on success, -1 on failure
 502  */
 503 int tlsv1_server_shutdown(struct tlsv1_server *conn)
 504 {
 505         conn->state = CLIENT_HELLO;
 506
 507         if (tls_verify_hash_init(&conn->verify) < 0) {
 508                 wpa_printf(MSG_DEBUG, "TLSv1: Failed to re-initialize verify "
 509                            "hash");
 510                 return -1;
 511         }
 512
 513         tlsv1_server_clear_data(conn);
 514
 515         return 0;
 516 }
 517
 518
 519 /**
 520  * tlsv1_server_resumed - Was session resumption used
 521  * @conn: TLSv1 server connection data from tlsv1_server_init()
 522  * Returns: 1 if current session used session resumption, 0 if not
 523  */
 524 int tlsv1_server_resumed(struct tlsv1_server *conn)
 525 {
 526         return 0;
 527 }
 528
 529
 530 /**
 531  * tlsv1_server_get_keys - Get master key and random data from TLS connection
 532  * @conn: TLSv1 server connection data from tlsv1_server_init()
 533  * @keys: Structure of key/random data (filled on success)
 534  * Returns: 0 on success, -1 on failure
 535  */
 536 int tlsv1_server_get_keys(struct tlsv1_server *conn, struct tls_keys *keys)
 537 {
 538         os_memset(keys, 0, sizeof(*keys));
 539         if (conn->state == CLIENT_HELLO)
 540                 return -1;
 541
 542         keys->client_random = conn->client_random;
 543         keys->client_random_len = TLS_RANDOM_LEN;
 544
 545         if (conn->state != SERVER_HELLO) {
 546                 keys->server_random = conn->server_random;
 547                 keys->server_random_len = TLS_RANDOM_LEN;
 548                 keys->master_key = conn->master_secret;
 549                 keys->master_key_len = TLS_MASTER_SECRET_LEN;
 550         }
 551
 552         return 0;
 553 }
 554
 555
 556 /**
 557  * tlsv1_server_get_keyblock_size - Get TLS key_block size
 558  * @conn: TLSv1 server connection data from tlsv1_server_init()
 559  * Returns: Size of the key_block for the negotiated cipher suite or -1 on
 560  * failure
 561  */
 562 int tlsv1_server_get_keyblock_size(struct tlsv1_server *conn)
 563 {
 564         if (conn->state == CLIENT_HELLO || conn->state == SERVER_HELLO)
 565                 return -1;
 566
 567         return 2 * (conn->rl.hash_size + conn->rl.key_material_len +
 568                     conn->rl.iv_size);
 569 }
 570
 571
 572 /**
 573  * tlsv1_server_set_cipher_list - Configure acceptable cipher suites
 574  * @conn: TLSv1 server connection data from tlsv1_server_init()
 575  * @ciphers: Zero (TLS_CIPHER_NONE) terminated list of allowed ciphers
 576  * (TLS_CIPHER_*).
 577  * Returns: 0 on success, -1 on failure
 578  */
 579 int tlsv1_server_set_cipher_list(struct tlsv1_server *conn, u8 *ciphers)
 580 {
 581         size_t count;
 582         u16 *suites;
 583
 584         /* TODO: implement proper configuration of cipher suites */
 585         if (ciphers[0] == TLS_CIPHER_ANON_DH_AES128_SHA) {
 586                 count = 0;
 587                 suites = conn->cipher_suites;
 588                 suites[count++] = TLS_RSA_WITH_AES_256_CBC_SHA;
 589                 suites[count++] = TLS_RSA_WITH_AES_128_CBC_SHA;
 590                 suites[count++] = TLS_RSA_WITH_3DES_EDE_CBC_SHA;
 591                 suites[count++] = TLS_RSA_WITH_RC4_128_SHA;
 592                 suites[count++] = TLS_RSA_WITH_RC4_128_MD5;
 593                 suites[count++] = TLS_DH_anon_WITH_AES_256_CBC_SHA;
 594                 suites[count++] = TLS_DH_anon_WITH_AES_128_CBC_SHA;
 595                 suites[count++] = TLS_DH_anon_WITH_3DES_EDE_CBC_SHA;
 596                 suites[count++] = TLS_DH_anon_WITH_RC4_128_MD5;
 597                 suites[count++] = TLS_DH_anon_WITH_DES_CBC_SHA;
 598                 conn->num_cipher_suites = count;
 599         }
 600
 601         return 0;
 602 }
 603
 604
 605 int tlsv1_server_set_verify(struct tlsv1_server *conn, int verify_peer)
 606 {
 607         conn->verify_peer = verify_peer;
 608         return 0;
 609 }
 610
 611
 612 void tlsv1_server_set_session_ticket_cb(struct tlsv1_server *conn,
 613                                         tlsv1_server_session_ticket_cb cb,
 614                                         void *ctx)
 615 {
 616         wpa_printf(MSG_DEBUG, "TLSv1: SessionTicket callback set %p (ctx %p)",
 617                    cb, ctx);
 618         conn->session_ticket_cb = cb;
 619         conn->session_ticket_cb_ctx = ctx;
 620 }