1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 2010 - 2011, Hoi-Ho Chan, <hoiho.chan (at) gmail.com> 9 * Copyright (C) 2012 - 2015, Daniel Stenberg, <daniel (at) haxx.se>, et al. 10 * 11 * This software is licensed as described in the file COPYING, which 12 * you should have received as part of this distribution. The terms 13 * are also available at http://curl.haxx.se/docs/copyright.html. 14 * 15 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 16 * copies of the Software, and permit persons to whom the Software is 17 * furnished to do so, under the terms of the COPYING file. 18 * 19 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 20 * KIND, either express or implied. 21 * 22 ***************************************************************************/ 23 24 /* 25 * Source file for all PolarSSL-specific code for the TLS/SSL layer. No code 26 * but vtls.c should ever call or use these functions. 27 * 28 */ 29 30 #include "curl_setup.h" 31 32 #ifdef USE_POLARSSL 33 34 #include <polarssl/net.h> 35 #include <polarssl/ssl.h> 36 #include <polarssl/certs.h> 37 #include <polarssl/x509.h> 38 #include <polarssl/version.h> 39 40 #if POLARSSL_VERSION_NUMBER < 0x01030000 41 #error too old PolarSSL 42 #endif 43 44 #include <polarssl/error.h> 45 #include <polarssl/entropy.h> 46 #include <polarssl/ctr_drbg.h> 47 48 #include "urldata.h" 49 #include "sendf.h" 50 #include "inet_pton.h" 51 #include "polarssl.h" 52 #include "vtls.h" 53 #include "parsedate.h" 54 #include "connect.h" /* for the connect timeout */ 55 #include "select.h" 56 #include "rawstr.h" 57 #include "polarssl_threadlock.h" 58 #include "curl_printf.h" 59 #include "curl_memory.h" 60 /* The last #include file should be: */ 61 #include "memdebug.h" 62 63 /* apply threading? */ 64 #if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32) 65 #define THREADING_SUPPORT 66 #endif 67 68 #if defined(THREADING_SUPPORT) 69 static entropy_context entropy; 70 71 static int entropy_init_initialized = 0; 72 73 /* start of entropy_init_mutex() */ 74 static void entropy_init_mutex(entropy_context *ctx) 75 { 76 /* lock 0 = entropy_init_mutex() */ 77 polarsslthreadlock_lock_function(0); 78 if(entropy_init_initialized == 0) { 79 entropy_init(ctx); 80 entropy_init_initialized = 1; 81 } 82 polarsslthreadlock_unlock_function(0); 83 } 84 /* end of entropy_init_mutex() */ 85 86 /* start of entropy_func_mutex() */ 87 static int entropy_func_mutex(void *data, unsigned char *output, size_t len) 88 { 89 int ret; 90 /* lock 1 = entropy_func_mutex() */ 91 polarsslthreadlock_lock_function(1); 92 ret = entropy_func(data, output, len); 93 polarsslthreadlock_unlock_function(1); 94 95 return ret; 96 } 97 /* end of entropy_func_mutex() */ 98 99 #endif /* THREADING_SUPPORT */ 100 101 /* Define this to enable lots of debugging for PolarSSL */ 102 #undef POLARSSL_DEBUG 103 104 #ifdef POLARSSL_DEBUG 105 static void polarssl_debug(void *context, int level, const char *line) 106 { 107 struct SessionHandle *data = NULL; 108 109 if(!context) 110 return; 111 112 data = (struct SessionHandle *)context; 113 114 infof(data, "%s", line); 115 (void) level; 116 } 117 #else 118 #endif 119 120 /* ALPN for http2? */ 121 #ifdef POLARSSL_SSL_ALPN 122 # define HAS_ALPN 123 #endif 124 125 static Curl_recv polarssl_recv; 126 static Curl_send polarssl_send; 127 128 129 static CURLcode 130 polarssl_connect_step1(struct connectdata *conn, 131 int sockindex) 132 { 133 struct SessionHandle *data = conn->data; 134 struct ssl_connect_data* connssl = &conn->ssl[sockindex]; 135 136 bool sni = TRUE; /* default is SNI enabled */ 137 int ret = -1; 138 #ifdef ENABLE_IPV6 139 struct in6_addr addr; 140 #else 141 struct in_addr addr; 142 #endif 143 void *old_session = NULL; 144 size_t old_session_size = 0; 145 char errorbuf[128]; 146 errorbuf[0]=0; 147 148 /* PolarSSL only supports SSLv3 and TLSv1 */ 149 if(data->set.ssl.version == CURL_SSLVERSION_SSLv2) { 150 failf(data, "PolarSSL does not support SSLv2"); 151 return CURLE_SSL_CONNECT_ERROR; 152 } 153 else if(data->set.ssl.version == CURL_SSLVERSION_SSLv3) 154 sni = FALSE; /* SSLv3 has no SNI */ 155 156 #ifdef THREADING_SUPPORT 157 entropy_init_mutex(&entropy); 158 159 if((ret = ctr_drbg_init(&connssl->ctr_drbg, entropy_func_mutex, &entropy, 160 connssl->ssn.id, connssl->ssn.length)) != 0) { 161 #ifdef POLARSSL_ERROR_C 162 error_strerror(ret, errorbuf, sizeof(errorbuf)); 163 #endif /* POLARSSL_ERROR_C */ 164 failf(data, "Failed - PolarSSL: ctr_drbg_init returned (-0x%04X) %s\n", 165 -ret, errorbuf); 166 } 167 #else 168 entropy_init(&connssl->entropy); 169 170 if((ret = ctr_drbg_init(&connssl->ctr_drbg, entropy_func, &connssl->entropy, 171 connssl->ssn.id, connssl->ssn.length)) != 0) { 172 #ifdef POLARSSL_ERROR_C 173 error_strerror(ret, errorbuf, sizeof(errorbuf)); 174 #endif /* POLARSSL_ERROR_C */ 175 failf(data, "Failed - PolarSSL: ctr_drbg_init returned (-0x%04X) %s\n", 176 -ret, errorbuf); 177 } 178 #endif /* THREADING_SUPPORT */ 179 180 /* Load the trusted CA */ 181 memset(&connssl->cacert, 0, sizeof(x509_crt)); 182 183 if(data->set.str[STRING_SSL_CAFILE]) { 184 ret = x509_crt_parse_file(&connssl->cacert, 185 data->set.str[STRING_SSL_CAFILE]); 186 187 if(ret<0) { 188 #ifdef POLARSSL_ERROR_C 189 error_strerror(ret, errorbuf, sizeof(errorbuf)); 190 #endif /* POLARSSL_ERROR_C */ 191 failf(data, "Error reading ca cert file %s - PolarSSL: (-0x%04X) %s", 192 data->set.str[STRING_SSL_CAFILE], -ret, errorbuf); 193 194 if(data->set.ssl.verifypeer) 195 return CURLE_SSL_CACERT_BADFILE; 196 } 197 } 198 199 if(data->set.str[STRING_SSL_CAPATH]) { 200 ret = x509_crt_parse_path(&connssl->cacert, 201 data->set.str[STRING_SSL_CAPATH]); 202 203 if(ret<0) { 204 #ifdef POLARSSL_ERROR_C 205 error_strerror(ret, errorbuf, sizeof(errorbuf)); 206 #endif /* POLARSSL_ERROR_C */ 207 failf(data, "Error reading ca cert path %s - PolarSSL: (-0x%04X) %s", 208 data->set.str[STRING_SSL_CAPATH], -ret, errorbuf); 209 210 if(data->set.ssl.verifypeer) 211 return CURLE_SSL_CACERT_BADFILE; 212 } 213 } 214 215 /* Load the client certificate */ 216 memset(&connssl->clicert, 0, sizeof(x509_crt)); 217 218 if(data->set.str[STRING_CERT]) { 219 ret = x509_crt_parse_file(&connssl->clicert, 220 data->set.str[STRING_CERT]); 221 222 if(ret) { 223 #ifdef POLARSSL_ERROR_C 224 error_strerror(ret, errorbuf, sizeof(errorbuf)); 225 #endif /* POLARSSL_ERROR_C */ 226 failf(data, "Error reading client cert file %s - PolarSSL: (-0x%04X) %s", 227 data->set.str[STRING_CERT], -ret, errorbuf); 228 229 return CURLE_SSL_CERTPROBLEM; 230 } 231 } 232 233 /* Load the client private key */ 234 if(data->set.str[STRING_KEY]) { 235 pk_context pk; 236 pk_init(&pk); 237 ret = pk_parse_keyfile(&pk, data->set.str[STRING_KEY], 238 data->set.str[STRING_KEY_PASSWD]); 239 if(ret == 0 && !pk_can_do(&pk, POLARSSL_PK_RSA)) 240 ret = POLARSSL_ERR_PK_TYPE_MISMATCH; 241 if(ret == 0) 242 rsa_copy(&connssl->rsa, pk_rsa(pk)); 243 else 244 rsa_free(&connssl->rsa); 245 pk_free(&pk); 246 247 if(ret) { 248 #ifdef POLARSSL_ERROR_C 249 error_strerror(ret, errorbuf, sizeof(errorbuf)); 250 #endif /* POLARSSL_ERROR_C */ 251 failf(data, "Error reading private key %s - PolarSSL: (-0x%04X) %s", 252 data->set.str[STRING_KEY], -ret, errorbuf); 253 254 return CURLE_SSL_CERTPROBLEM; 255 } 256 } 257 258 /* Load the CRL */ 259 memset(&connssl->crl, 0, sizeof(x509_crl)); 260 261 if(data->set.str[STRING_SSL_CRLFILE]) { 262 ret = x509_crl_parse_file(&connssl->crl, 263 data->set.str[STRING_SSL_CRLFILE]); 264 265 if(ret) { 266 #ifdef POLARSSL_ERROR_C 267 error_strerror(ret, errorbuf, sizeof(errorbuf)); 268 #endif /* POLARSSL_ERROR_C */ 269 failf(data, "Error reading CRL file %s - PolarSSL: (-0x%04X) %s", 270 data->set.str[STRING_SSL_CRLFILE], -ret, errorbuf); 271 272 return CURLE_SSL_CRL_BADFILE; 273 } 274 } 275 276 infof(data, "PolarSSL: Connecting to %s:%d\n", 277 conn->host.name, conn->remote_port); 278 279 if(ssl_init(&connssl->ssl)) { 280 failf(data, "PolarSSL: ssl_init failed"); 281 return CURLE_SSL_CONNECT_ERROR; 282 } 283 284 switch(data->set.ssl.version) { 285 default: 286 case CURL_SSLVERSION_DEFAULT: 287 case CURL_SSLVERSION_TLSv1: 288 ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3, 289 SSL_MINOR_VERSION_1); 290 break; 291 case CURL_SSLVERSION_SSLv3: 292 ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3, 293 SSL_MINOR_VERSION_0); 294 ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3, 295 SSL_MINOR_VERSION_0); 296 infof(data, "PolarSSL: Forced min. SSL Version to be SSLv3\n"); 297 break; 298 case CURL_SSLVERSION_TLSv1_0: 299 ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3, 300 SSL_MINOR_VERSION_1); 301 ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3, 302 SSL_MINOR_VERSION_1); 303 infof(data, "PolarSSL: Forced min. SSL Version to be TLS 1.0\n"); 304 break; 305 case CURL_SSLVERSION_TLSv1_1: 306 ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3, 307 SSL_MINOR_VERSION_2); 308 ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3, 309 SSL_MINOR_VERSION_2); 310 infof(data, "PolarSSL: Forced min. SSL Version to be TLS 1.1\n"); 311 break; 312 case CURL_SSLVERSION_TLSv1_2: 313 ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3, 314 SSL_MINOR_VERSION_3); 315 ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3, 316 SSL_MINOR_VERSION_3); 317 infof(data, "PolarSSL: Forced min. SSL Version to be TLS 1.2\n"); 318 break; 319 } 320 321 ssl_set_endpoint(&connssl->ssl, SSL_IS_CLIENT); 322 ssl_set_authmode(&connssl->ssl, SSL_VERIFY_OPTIONAL); 323 324 ssl_set_rng(&connssl->ssl, ctr_drbg_random, 325 &connssl->ctr_drbg); 326 ssl_set_bio(&connssl->ssl, 327 net_recv, &conn->sock[sockindex], 328 net_send, &conn->sock[sockindex]); 329 330 ssl_set_ciphersuites(&connssl->ssl, ssl_list_ciphersuites()); 331 if(!Curl_ssl_getsessionid(conn, &old_session, &old_session_size)) { 332 memcpy(&connssl->ssn, old_session, old_session_size); 333 infof(data, "PolarSSL re-using session\n"); 334 } 335 336 ssl_set_session(&connssl->ssl, 337 &connssl->ssn); 338 339 ssl_set_ca_chain(&connssl->ssl, 340 &connssl->cacert, 341 &connssl->crl, 342 conn->host.name); 343 344 ssl_set_own_cert_rsa(&connssl->ssl, 345 &connssl->clicert, &connssl->rsa); 346 347 if(!Curl_inet_pton(AF_INET, conn->host.name, &addr) && 348 #ifdef ENABLE_IPV6 349 !Curl_inet_pton(AF_INET6, conn->host.name, &addr) && 350 #endif 351 sni && ssl_set_hostname(&connssl->ssl, conn->host.name)) { 352 infof(data, "WARNING: failed to configure " 353 "server name indication (SNI) TLS extension\n"); 354 } 355 356 #ifdef HAS_ALPN 357 if(data->set.ssl_enable_alpn) { 358 static const char* protocols[3]; 359 int cur = 0; 360 361 #ifdef USE_NGHTTP2 362 if(data->set.httpversion == CURL_HTTP_VERSION_2_0) { 363 protocols[cur++] = NGHTTP2_PROTO_VERSION_ID; 364 infof(data, "ALPN, offering %s\n", NGHTTP2_PROTO_VERSION_ID); 365 } 366 #endif 367 368 protocols[cur++] = ALPN_HTTP_1_1; 369 infof(data, "ALPN, offering %s\n", ALPN_HTTP_1_1); 370 371 protocols[cur] = NULL; 372 373 ssl_set_alpn_protocols(&connssl->ssl, protocols); 374 } 375 #endif 376 377 #ifdef POLARSSL_DEBUG 378 ssl_set_dbg(&connssl->ssl, polarssl_debug, data); 379 #endif 380 381 connssl->connecting_state = ssl_connect_2; 382 383 return CURLE_OK; 384 } 385 386 static CURLcode 387 polarssl_connect_step2(struct connectdata *conn, 388 int sockindex) 389 { 390 int ret; 391 struct SessionHandle *data = conn->data; 392 struct ssl_connect_data* connssl = &conn->ssl[sockindex]; 393 char buffer[1024]; 394 395 char errorbuf[128]; 396 errorbuf[0] = 0; 397 398 conn->recv[sockindex] = polarssl_recv; 399 conn->send[sockindex] = polarssl_send; 400 401 ret = ssl_handshake(&connssl->ssl); 402 403 switch(ret) { 404 case 0: 405 break; 406 407 case POLARSSL_ERR_NET_WANT_READ: 408 connssl->connecting_state = ssl_connect_2_reading; 409 return CURLE_OK; 410 411 case POLARSSL_ERR_NET_WANT_WRITE: 412 connssl->connecting_state = ssl_connect_2_writing; 413 return CURLE_OK; 414 415 default: 416 #ifdef POLARSSL_ERROR_C 417 error_strerror(ret, errorbuf, sizeof(errorbuf)); 418 #endif /* POLARSSL_ERROR_C */ 419 failf(data, "ssl_handshake returned - PolarSSL: (-0x%04X) %s", 420 -ret, errorbuf); 421 return CURLE_SSL_CONNECT_ERROR; 422 } 423 424 infof(data, "PolarSSL: Handshake complete, cipher is %s\n", 425 ssl_get_ciphersuite(&conn->ssl[sockindex].ssl) ); 426 427 ret = ssl_get_verify_result(&conn->ssl[sockindex].ssl); 428 429 if(ret && data->set.ssl.verifypeer) { 430 if(ret & BADCERT_EXPIRED) 431 failf(data, "Cert verify failed: BADCERT_EXPIRED"); 432 433 if(ret & BADCERT_REVOKED) { 434 failf(data, "Cert verify failed: BADCERT_REVOKED"); 435 return CURLE_SSL_CACERT; 436 } 437 438 if(ret & BADCERT_CN_MISMATCH) 439 failf(data, "Cert verify failed: BADCERT_CN_MISMATCH"); 440 441 if(ret & BADCERT_NOT_TRUSTED) 442 failf(data, "Cert verify failed: BADCERT_NOT_TRUSTED"); 443 444 return CURLE_PEER_FAILED_VERIFICATION; 445 } 446 447 if(ssl_get_peer_cert(&(connssl->ssl))) { 448 /* If the session was resumed, there will be no peer certs */ 449 memset(buffer, 0, sizeof(buffer)); 450 451 if(x509_crt_info(buffer, sizeof(buffer), (char *)"* ", 452 ssl_get_peer_cert(&(connssl->ssl))) != -1) 453 infof(data, "Dumping cert info:\n%s\n", buffer); 454 } 455 456 #ifdef HAS_ALPN 457 if(data->set.ssl_enable_alpn) { 458 const char *next_protocol = ssl_get_alpn_protocol(&connssl->ssl); 459 460 if(next_protocol != NULL) { 461 infof(data, "ALPN, server accepted to use %s\n", next_protocol); 462 463 #ifdef USE_NGHTTP2 464 if(!strncmp(next_protocol, NGHTTP2_PROTO_VERSION_ID, 465 NGHTTP2_PROTO_VERSION_ID_LEN)) { 466 conn->negnpn = CURL_HTTP_VERSION_2_0; 467 } 468 else 469 #endif 470 if(!strncmp(next_protocol, ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH)) { 471 conn->negnpn = CURL_HTTP_VERSION_1_1; 472 } 473 } 474 else 475 infof(data, "ALPN, server did not agree to a protocol\n"); 476 } 477 #endif 478 479 connssl->connecting_state = ssl_connect_3; 480 infof(data, "SSL connected\n"); 481 482 return CURLE_OK; 483 } 484 485 static CURLcode 486 polarssl_connect_step3(struct connectdata *conn, 487 int sockindex) 488 { 489 CURLcode result = CURLE_OK; 490 struct ssl_connect_data *connssl = &conn->ssl[sockindex]; 491 struct SessionHandle *data = conn->data; 492 void *old_ssl_sessionid = NULL; 493 ssl_session *our_ssl_sessionid = &conn->ssl[sockindex].ssn; 494 bool incache; 495 496 DEBUGASSERT(ssl_connect_3 == connssl->connecting_state); 497 498 /* Save the current session data for possible re-use */ 499 incache = !(Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL)); 500 if(incache) { 501 if(old_ssl_sessionid != our_ssl_sessionid) { 502 infof(data, "old SSL session ID is stale, removing\n"); 503 Curl_ssl_delsessionid(conn, old_ssl_sessionid); 504 incache = FALSE; 505 } 506 } 507 508 if(!incache) { 509 void *new_session = malloc(sizeof(ssl_session)); 510 511 if(new_session) { 512 memcpy(new_session, our_ssl_sessionid, sizeof(ssl_session)); 513 514 result = Curl_ssl_addsessionid(conn, new_session, sizeof(ssl_session)); 515 } 516 else 517 result = CURLE_OUT_OF_MEMORY; 518 519 if(result) { 520 failf(data, "failed to store ssl session"); 521 return result; 522 } 523 } 524 525 connssl->connecting_state = ssl_connect_done; 526 527 return CURLE_OK; 528 } 529 530 static ssize_t polarssl_send(struct connectdata *conn, 531 int sockindex, 532 const void *mem, 533 size_t len, 534 CURLcode *curlcode) 535 { 536 int ret = -1; 537 538 ret = ssl_write(&conn->ssl[sockindex].ssl, 539 (unsigned char *)mem, len); 540 541 if(ret < 0) { 542 *curlcode = (ret == POLARSSL_ERR_NET_WANT_WRITE) ? 543 CURLE_AGAIN : CURLE_SEND_ERROR; 544 ret = -1; 545 } 546 547 return ret; 548 } 549 550 void Curl_polarssl_close(struct connectdata *conn, int sockindex) 551 { 552 rsa_free(&conn->ssl[sockindex].rsa); 553 x509_crt_free(&conn->ssl[sockindex].clicert); 554 x509_crt_free(&conn->ssl[sockindex].cacert); 555 x509_crl_free(&conn->ssl[sockindex].crl); 556 ssl_free(&conn->ssl[sockindex].ssl); 557 } 558 559 static ssize_t polarssl_recv(struct connectdata *conn, 560 int num, 561 char *buf, 562 size_t buffersize, 563 CURLcode *curlcode) 564 { 565 int ret = -1; 566 ssize_t len = -1; 567 568 memset(buf, 0, buffersize); 569 ret = ssl_read(&conn->ssl[num].ssl, (unsigned char *)buf, buffersize); 570 571 if(ret <= 0) { 572 if(ret == POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY) 573 return 0; 574 575 *curlcode = (ret == POLARSSL_ERR_NET_WANT_READ) ? 576 CURLE_AGAIN : CURLE_RECV_ERROR; 577 return -1; 578 } 579 580 len = ret; 581 582 return len; 583 } 584 585 void Curl_polarssl_session_free(void *ptr) 586 { 587 free(ptr); 588 } 589 590 /* 1.3.10 was the first rebranded version. All new releases (in 1.3 branch and 591 higher) will be mbed TLS branded.. */ 592 593 size_t Curl_polarssl_version(char *buffer, size_t size) 594 { 595 unsigned int version = version_get_number(); 596 return snprintf(buffer, size, "%s/%d.%d.%d", 597 version >= 0x01030A00?"mbedTLS":"PolarSSL", 598 version>>24, (version>>16)&0xff, (version>>8)&0xff); 599 } 600 601 static CURLcode 602 polarssl_connect_common(struct connectdata *conn, 603 int sockindex, 604 bool nonblocking, 605 bool *done) 606 { 607 CURLcode result; 608 struct SessionHandle *data = conn->data; 609 struct ssl_connect_data *connssl = &conn->ssl[sockindex]; 610 curl_socket_t sockfd = conn->sock[sockindex]; 611 long timeout_ms; 612 int what; 613 614 /* check if the connection has already been established */ 615 if(ssl_connection_complete == connssl->state) { 616 *done = TRUE; 617 return CURLE_OK; 618 } 619 620 if(ssl_connect_1 == connssl->connecting_state) { 621 /* Find out how much more time we're allowed */ 622 timeout_ms = Curl_timeleft(data, NULL, TRUE); 623 624 if(timeout_ms < 0) { 625 /* no need to continue if time already is up */ 626 failf(data, "SSL connection timeout"); 627 return CURLE_OPERATION_TIMEDOUT; 628 } 629 630 result = polarssl_connect_step1(conn, sockindex); 631 if(result) 632 return result; 633 } 634 635 while(ssl_connect_2 == connssl->connecting_state || 636 ssl_connect_2_reading == connssl->connecting_state || 637 ssl_connect_2_writing == connssl->connecting_state) { 638 639 /* check allowed time left */ 640 timeout_ms = Curl_timeleft(data, NULL, TRUE); 641 642 if(timeout_ms < 0) { 643 /* no need to continue if time already is up */ 644 failf(data, "SSL connection timeout"); 645 return CURLE_OPERATION_TIMEDOUT; 646 } 647 648 /* if ssl is expecting something, check if it's available. */ 649 if(connssl->connecting_state == ssl_connect_2_reading || 650 connssl->connecting_state == ssl_connect_2_writing) { 651 652 curl_socket_t writefd = ssl_connect_2_writing== 653 connssl->connecting_state?sockfd:CURL_SOCKET_BAD; 654 curl_socket_t readfd = ssl_connect_2_reading== 655 connssl->connecting_state?sockfd:CURL_SOCKET_BAD; 656 657 what = Curl_socket_ready(readfd, writefd, nonblocking?0:timeout_ms); 658 if(what < 0) { 659 /* fatal error */ 660 failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO); 661 return CURLE_SSL_CONNECT_ERROR; 662 } 663 else if(0 == what) { 664 if(nonblocking) { 665 *done = FALSE; 666 return CURLE_OK; 667 } 668 else { 669 /* timeout */ 670 failf(data, "SSL connection timeout"); 671 return CURLE_OPERATION_TIMEDOUT; 672 } 673 } 674 /* socket is readable or writable */ 675 } 676 677 /* Run transaction, and return to the caller if it failed or if 678 * this connection is part of a multi handle and this loop would 679 * execute again. This permits the owner of a multi handle to 680 * abort a connection attempt before step2 has completed while 681 * ensuring that a client using select() or epoll() will always 682 * have a valid fdset to wait on. 683 */ 684 result = polarssl_connect_step2(conn, sockindex); 685 if(result || (nonblocking && 686 (ssl_connect_2 == connssl->connecting_state || 687 ssl_connect_2_reading == connssl->connecting_state || 688 ssl_connect_2_writing == connssl->connecting_state))) 689 return result; 690 691 } /* repeat step2 until all transactions are done. */ 692 693 if(ssl_connect_3 == connssl->connecting_state) { 694 result = polarssl_connect_step3(conn, sockindex); 695 if(result) 696 return result; 697 } 698 699 if(ssl_connect_done == connssl->connecting_state) { 700 connssl->state = ssl_connection_complete; 701 conn->recv[sockindex] = polarssl_recv; 702 conn->send[sockindex] = polarssl_send; 703 *done = TRUE; 704 } 705 else 706 *done = FALSE; 707 708 /* Reset our connect state machine */ 709 connssl->connecting_state = ssl_connect_1; 710 711 return CURLE_OK; 712 } 713 714 CURLcode 715 Curl_polarssl_connect_nonblocking(struct connectdata *conn, 716 int sockindex, 717 bool *done) 718 { 719 return polarssl_connect_common(conn, sockindex, TRUE, done); 720 } 721 722 723 CURLcode 724 Curl_polarssl_connect(struct connectdata *conn, 725 int sockindex) 726 { 727 CURLcode result; 728 bool done = FALSE; 729 730 result = polarssl_connect_common(conn, sockindex, FALSE, &done); 731 if(result) 732 return result; 733 734 DEBUGASSERT(done); 735 736 return CURLE_OK; 737 } 738 739 /* 740 * return 0 error initializing SSL 741 * return 1 SSL initialized successfully 742 */ 743 int polarssl_init(void) 744 { 745 return polarsslthreadlock_thread_setup(); 746 } 747 748 void polarssl_cleanup(void) 749 { 750 (void)polarsslthreadlock_thread_cleanup(); 751 } 752 753 #endif /* USE_POLARSSL */ 754
