1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 2012 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
9 * Copyright (C) 2010 - 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com>
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 https://curl.haxx.se/docs/copyright.html.
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.
19 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
20 * KIND, either express or implied.
22 ***************************************************************************/
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.
30 #include "curl_setup.h"
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 #include <polarssl/sha256.h>
41 #if POLARSSL_VERSION_NUMBER < 0x01030000
42 #error too old PolarSSL
45 #include <polarssl/error.h>
46 #include <polarssl/entropy.h>
47 #include <polarssl/ctr_drbg.h>
51 #include "inet_pton.h"
54 #include "parsedate.h"
55 #include "connect.h" /* for the connect timeout */
58 #include "polarssl_threadlock.h"
59 #include "curl_printf.h"
60 #include "curl_memory.h"
61 /* The last #include file should be: */
64 /* See https://tls.mbed.org/discussions/generic/
65 howto-determine-exact-buffer-len-for-mbedtls_pk_write_pubkey_der
67 #define RSA_PUB_DER_MAX_BYTES (38 + 2 * POLARSSL_MPI_MAX_SIZE)
68 #define ECP_PUB_DER_MAX_BYTES (30 + 2 * POLARSSL_ECP_MAX_BYTES)
70 #define PUB_DER_MAX_BYTES (RSA_PUB_DER_MAX_BYTES > ECP_PUB_DER_MAX_BYTES ? \
71 RSA_PUB_DER_MAX_BYTES : ECP_PUB_DER_MAX_BYTES)
73 /* apply threading? */
74 #if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
75 #define THREADING_SUPPORT
78 #ifndef POLARSSL_ERROR_C
79 #define error_strerror(x,y,z)
80 #endif /* POLARSSL_ERROR_C */
83 #if defined(THREADING_SUPPORT)
84 static entropy_context entropy;
86 static int entropy_init_initialized = 0;
88 /* start of entropy_init_mutex() */
89 static void entropy_init_mutex(entropy_context *ctx)
91 /* lock 0 = entropy_init_mutex() */
92 Curl_polarsslthreadlock_lock_function(0);
93 if(entropy_init_initialized == 0) {
95 entropy_init_initialized = 1;
97 Curl_polarsslthreadlock_unlock_function(0);
99 /* end of entropy_init_mutex() */
101 /* start of entropy_func_mutex() */
102 static int entropy_func_mutex(void *data, unsigned char *output, size_t len)
105 /* lock 1 = entropy_func_mutex() */
106 Curl_polarsslthreadlock_lock_function(1);
107 ret = entropy_func(data, output, len);
108 Curl_polarsslthreadlock_unlock_function(1);
112 /* end of entropy_func_mutex() */
114 #endif /* THREADING_SUPPORT */
116 /* Define this to enable lots of debugging for PolarSSL */
117 #undef POLARSSL_DEBUG
119 #ifdef POLARSSL_DEBUG
120 static void polarssl_debug(void *context, int level, const char *line)
122 struct Curl_easy *data = NULL;
127 data = (struct Curl_easy *)context;
129 infof(data, "%s", line);
135 /* ALPN for http2? */
136 #ifdef POLARSSL_SSL_ALPN
140 static Curl_recv polarssl_recv;
141 static Curl_send polarssl_send;
145 polarssl_connect_step1(struct connectdata *conn,
148 struct Curl_easy *data = conn->data;
149 struct ssl_connect_data* connssl = &conn->ssl[sockindex];
150 const char *capath = SSL_CONN_CONFIG(CApath);
151 const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
153 const long int port = SSL_IS_PROXY() ? conn->port : conn->remote_port;
158 /* PolarSSL only supports SSLv3 and TLSv1 */
159 if(SSL_CONN_CONFIG(version) == CURL_SSLVERSION_SSLv2) {
160 failf(data, "PolarSSL does not support SSLv2");
161 return CURLE_SSL_CONNECT_ERROR;
164 #ifdef THREADING_SUPPORT
165 entropy_init_mutex(&entropy);
167 if((ret = ctr_drbg_init(&connssl->ctr_drbg, entropy_func_mutex, &entropy,
169 error_strerror(ret, errorbuf, sizeof(errorbuf));
170 failf(data, "Failed - PolarSSL: ctr_drbg_init returned (-0x%04X) %s\n",
174 entropy_init(&connssl->entropy);
176 if((ret = ctr_drbg_init(&connssl->ctr_drbg, entropy_func, &connssl->entropy,
178 error_strerror(ret, errorbuf, sizeof(errorbuf));
179 failf(data, "Failed - PolarSSL: ctr_drbg_init returned (-0x%04X) %s\n",
182 #endif /* THREADING_SUPPORT */
184 /* Load the trusted CA */
185 memset(&connssl->cacert, 0, sizeof(x509_crt));
187 if(SSL_CONN_CONFIG(CAfile)) {
188 ret = x509_crt_parse_file(&connssl->cacert,
189 SSL_CONN_CONFIG(CAfile));
192 error_strerror(ret, errorbuf, sizeof(errorbuf));
193 failf(data, "Error reading ca cert file %s - PolarSSL: (-0x%04X) %s",
194 SSL_CONN_CONFIG(CAfile), -ret, errorbuf);
196 if(SSL_CONN_CONFIG(verifypeer))
197 return CURLE_SSL_CACERT_BADFILE;
202 ret = x509_crt_parse_path(&connssl->cacert, capath);
205 error_strerror(ret, errorbuf, sizeof(errorbuf));
206 failf(data, "Error reading ca cert path %s - PolarSSL: (-0x%04X) %s",
207 capath, -ret, errorbuf);
209 if(SSL_CONN_CONFIG(verifypeer))
210 return CURLE_SSL_CACERT_BADFILE;
214 /* Load the client certificate */
215 memset(&connssl->clicert, 0, sizeof(x509_crt));
217 if(SSL_SET_OPTION(cert)) {
218 ret = x509_crt_parse_file(&connssl->clicert,
219 SSL_SET_OPTION(cert));
222 error_strerror(ret, errorbuf, sizeof(errorbuf));
223 failf(data, "Error reading client cert file %s - PolarSSL: (-0x%04X) %s",
224 SSL_SET_OPTION(cert), -ret, errorbuf);
226 return CURLE_SSL_CERTPROBLEM;
230 /* Load the client private key */
231 if(SSL_SET_OPTION(key)) {
234 ret = pk_parse_keyfile(&pk, SSL_SET_OPTION(key),
235 SSL_SET_OPTION(key_passwd));
236 if(ret == 0 && !pk_can_do(&pk, POLARSSL_PK_RSA))
237 ret = POLARSSL_ERR_PK_TYPE_MISMATCH;
239 rsa_copy(&connssl->rsa, pk_rsa(pk));
241 rsa_free(&connssl->rsa);
245 error_strerror(ret, errorbuf, sizeof(errorbuf));
246 failf(data, "Error reading private key %s - PolarSSL: (-0x%04X) %s",
247 SSL_SET_OPTION(key), -ret, errorbuf);
249 return CURLE_SSL_CERTPROBLEM;
254 memset(&connssl->crl, 0, sizeof(x509_crl));
256 if(SSL_SET_OPTION(CRLfile)) {
257 ret = x509_crl_parse_file(&connssl->crl,
258 SSL_SET_OPTION(CRLfile));
261 error_strerror(ret, errorbuf, sizeof(errorbuf));
262 failf(data, "Error reading CRL file %s - PolarSSL: (-0x%04X) %s",
263 SSL_SET_OPTION(CRLfile), -ret, errorbuf);
265 return CURLE_SSL_CRL_BADFILE;
269 infof(data, "PolarSSL: Connecting to %s:%d\n", hostname, port);
271 if(ssl_init(&connssl->ssl)) {
272 failf(data, "PolarSSL: ssl_init failed");
273 return CURLE_SSL_CONNECT_ERROR;
276 switch(SSL_CONN_CONFIG(version)) {
277 case CURL_SSLVERSION_DEFAULT:
278 case CURL_SSLVERSION_TLSv1:
279 ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
280 SSL_MINOR_VERSION_1);
282 case CURL_SSLVERSION_SSLv3:
283 ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
284 SSL_MINOR_VERSION_0);
285 ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
286 SSL_MINOR_VERSION_0);
287 infof(data, "PolarSSL: Forced min. SSL Version to be SSLv3\n");
289 case CURL_SSLVERSION_TLSv1_0:
290 ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
291 SSL_MINOR_VERSION_1);
292 ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
293 SSL_MINOR_VERSION_1);
294 infof(data, "PolarSSL: Forced min. SSL Version to be TLS 1.0\n");
296 case CURL_SSLVERSION_TLSv1_1:
297 ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
298 SSL_MINOR_VERSION_2);
299 ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
300 SSL_MINOR_VERSION_2);
301 infof(data, "PolarSSL: Forced min. SSL Version to be TLS 1.1\n");
303 case CURL_SSLVERSION_TLSv1_2:
304 ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
305 SSL_MINOR_VERSION_3);
306 ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
307 SSL_MINOR_VERSION_3);
308 infof(data, "PolarSSL: Forced min. SSL Version to be TLS 1.2\n");
310 case CURL_SSLVERSION_TLSv1_3:
311 failf(data, "PolarSSL: TLS 1.3 is not yet supported");
312 return CURLE_SSL_CONNECT_ERROR;
314 failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
315 return CURLE_SSL_CONNECT_ERROR;
318 ssl_set_endpoint(&connssl->ssl, SSL_IS_CLIENT);
319 ssl_set_authmode(&connssl->ssl, SSL_VERIFY_OPTIONAL);
321 ssl_set_rng(&connssl->ssl, ctr_drbg_random,
323 ssl_set_bio(&connssl->ssl,
324 net_recv, &conn->sock[sockindex],
325 net_send, &conn->sock[sockindex]);
327 ssl_set_ciphersuites(&connssl->ssl, ssl_list_ciphersuites());
329 /* Check if there's a cached ID we can/should use here! */
330 if(data->set.general_ssl.sessionid) {
331 void *old_session = NULL;
333 Curl_ssl_sessionid_lock(conn);
334 if(!Curl_ssl_getsessionid(conn, &old_session, NULL, sockindex)) {
335 ret = ssl_set_session(&connssl->ssl, old_session);
337 Curl_ssl_sessionid_unlock(conn);
338 failf(data, "ssl_set_session returned -0x%x", -ret);
339 return CURLE_SSL_CONNECT_ERROR;
341 infof(data, "PolarSSL re-using session\n");
343 Curl_ssl_sessionid_unlock(conn);
346 ssl_set_ca_chain(&connssl->ssl,
351 ssl_set_own_cert_rsa(&connssl->ssl,
352 &connssl->clicert, &connssl->rsa);
354 if(ssl_set_hostname(&connssl->ssl, hostname)) {
355 /* ssl_set_hostname() sets the name to use in CN/SAN checks *and* the name
356 to set in the SNI extension. So even if curl connects to a host
357 specified as an IP address, this function must be used. */
358 failf(data, "couldn't set hostname in PolarSSL");
359 return CURLE_SSL_CONNECT_ERROR;
363 if(conn->bits.tls_enable_alpn) {
364 static const char *protocols[3];
368 if(data->set.httpversion >= CURL_HTTP_VERSION_2) {
369 protocols[cur++] = NGHTTP2_PROTO_VERSION_ID;
370 infof(data, "ALPN, offering %s\n", NGHTTP2_PROTO_VERSION_ID);
374 protocols[cur++] = ALPN_HTTP_1_1;
375 infof(data, "ALPN, offering %s\n", ALPN_HTTP_1_1);
377 protocols[cur] = NULL;
379 ssl_set_alpn_protocols(&connssl->ssl, protocols);
383 #ifdef POLARSSL_DEBUG
384 ssl_set_dbg(&connssl->ssl, polarssl_debug, data);
387 connssl->connecting_state = ssl_connect_2;
393 polarssl_connect_step2(struct connectdata *conn,
397 struct Curl_easy *data = conn->data;
398 struct ssl_connect_data* connssl = &conn->ssl[sockindex];
400 const char * const pinnedpubkey = SSL_IS_PROXY() ?
401 data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY] :
402 data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG];
408 conn->recv[sockindex] = polarssl_recv;
409 conn->send[sockindex] = polarssl_send;
411 ret = ssl_handshake(&connssl->ssl);
417 case POLARSSL_ERR_NET_WANT_READ:
418 connssl->connecting_state = ssl_connect_2_reading;
421 case POLARSSL_ERR_NET_WANT_WRITE:
422 connssl->connecting_state = ssl_connect_2_writing;
426 error_strerror(ret, errorbuf, sizeof(errorbuf));
427 failf(data, "ssl_handshake returned - PolarSSL: (-0x%04X) %s",
429 return CURLE_SSL_CONNECT_ERROR;
432 infof(data, "PolarSSL: Handshake complete, cipher is %s\n",
433 ssl_get_ciphersuite(&conn->ssl[sockindex].ssl) );
435 ret = ssl_get_verify_result(&conn->ssl[sockindex].ssl);
437 if(ret && SSL_CONN_CONFIG(verifypeer)) {
438 if(ret & BADCERT_EXPIRED)
439 failf(data, "Cert verify failed: BADCERT_EXPIRED");
441 if(ret & BADCERT_REVOKED) {
442 failf(data, "Cert verify failed: BADCERT_REVOKED");
443 return CURLE_SSL_CACERT;
446 if(ret & BADCERT_CN_MISMATCH)
447 failf(data, "Cert verify failed: BADCERT_CN_MISMATCH");
449 if(ret & BADCERT_NOT_TRUSTED)
450 failf(data, "Cert verify failed: BADCERT_NOT_TRUSTED");
452 return CURLE_PEER_FAILED_VERIFICATION;
455 if(ssl_get_peer_cert(&(connssl->ssl))) {
456 /* If the session was resumed, there will be no peer certs */
457 memset(buffer, 0, sizeof(buffer));
459 if(x509_crt_info(buffer, sizeof(buffer), (char *)"* ",
460 ssl_get_peer_cert(&(connssl->ssl))) != -1)
461 infof(data, "Dumping cert info:\n%s\n", buffer);
464 /* adapted from mbedtls.c */
469 unsigned char pubkey[PUB_DER_MAX_BYTES];
470 const x509_crt *peercert;
472 peercert = ssl_get_peer_cert(&connssl->ssl);
474 if(!peercert || !peercert->raw.p || !peercert->raw.len) {
475 failf(data, "Failed due to missing peer certificate");
476 return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
479 p = calloc(1, sizeof(*p));
482 return CURLE_OUT_OF_MEMORY;
486 /* Make a copy of our const peercert because pk_write_pubkey_der
487 needs a non-const key, for now.
488 https://github.com/ARMmbed/mbedtls/issues/396 */
489 if(x509_crt_parse_der(p, peercert->raw.p, peercert->raw.len)) {
490 failf(data, "Failed copying peer certificate");
493 return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
496 size = pk_write_pubkey_der(&p->pk, pubkey, PUB_DER_MAX_BYTES);
499 failf(data, "Failed copying public key from peer certificate");
502 return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
505 /* pk_write_pubkey_der writes data at the end of the buffer. */
506 result = Curl_pin_peer_pubkey(data,
508 &pubkey[PUB_DER_MAX_BYTES - size], size);
520 if(conn->bits.tls_enable_alpn) {
521 const char *next_protocol = ssl_get_alpn_protocol(&connssl->ssl);
523 if(next_protocol != NULL) {
524 infof(data, "ALPN, server accepted to use %s\n", next_protocol);
527 if(!strncmp(next_protocol, NGHTTP2_PROTO_VERSION_ID,
528 NGHTTP2_PROTO_VERSION_ID_LEN)) {
529 conn->negnpn = CURL_HTTP_VERSION_2;
533 if(!strncmp(next_protocol, ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH)) {
534 conn->negnpn = CURL_HTTP_VERSION_1_1;
538 infof(data, "ALPN, server did not agree to a protocol\n");
542 connssl->connecting_state = ssl_connect_3;
543 infof(data, "SSL connected\n");
549 polarssl_connect_step3(struct connectdata *conn,
552 CURLcode retcode = CURLE_OK;
553 struct ssl_connect_data *connssl = &conn->ssl[sockindex];
554 struct Curl_easy *data = conn->data;
556 DEBUGASSERT(ssl_connect_3 == connssl->connecting_state);
558 if(data->set.general_ssl.sessionid) {
560 ssl_session *our_ssl_sessionid;
561 void *old_ssl_sessionid = NULL;
563 our_ssl_sessionid = malloc(sizeof(ssl_session));
564 if(!our_ssl_sessionid)
565 return CURLE_OUT_OF_MEMORY;
567 ssl_session_init(our_ssl_sessionid);
569 ret = ssl_get_session(&connssl->ssl, our_ssl_sessionid);
571 failf(data, "ssl_get_session returned -0x%x", -ret);
572 return CURLE_SSL_CONNECT_ERROR;
575 /* If there's already a matching session in the cache, delete it */
576 Curl_ssl_sessionid_lock(conn);
577 if(!Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL, sockindex))
578 Curl_ssl_delsessionid(conn, old_ssl_sessionid);
580 retcode = Curl_ssl_addsessionid(conn, our_ssl_sessionid, 0, sockindex);
581 Curl_ssl_sessionid_unlock(conn);
583 free(our_ssl_sessionid);
584 failf(data, "failed to store ssl session");
589 connssl->connecting_state = ssl_connect_done;
594 static ssize_t polarssl_send(struct connectdata *conn,
602 ret = ssl_write(&conn->ssl[sockindex].ssl,
603 (unsigned char *)mem, len);
606 *curlcode = (ret == POLARSSL_ERR_NET_WANT_WRITE) ?
607 CURLE_AGAIN : CURLE_SEND_ERROR;
614 void Curl_polarssl_close(struct connectdata *conn, int sockindex)
616 rsa_free(&conn->ssl[sockindex].rsa);
617 x509_crt_free(&conn->ssl[sockindex].clicert);
618 x509_crt_free(&conn->ssl[sockindex].cacert);
619 x509_crl_free(&conn->ssl[sockindex].crl);
620 ssl_free(&conn->ssl[sockindex].ssl);
623 static ssize_t polarssl_recv(struct connectdata *conn,
632 memset(buf, 0, buffersize);
633 ret = ssl_read(&conn->ssl[num].ssl, (unsigned char *)buf, buffersize);
636 if(ret == POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY)
639 *curlcode = (ret == POLARSSL_ERR_NET_WANT_READ) ?
640 CURLE_AGAIN : CURLE_RECV_ERROR;
649 void Curl_polarssl_session_free(void *ptr)
651 ssl_session_free(ptr);
655 /* 1.3.10 was the first rebranded version. All new releases (in 1.3 branch and
656 higher) will be mbed TLS branded.. */
658 size_t Curl_polarssl_version(char *buffer, size_t size)
660 unsigned int version = version_get_number();
661 return snprintf(buffer, size, "%s/%d.%d.%d",
662 version >= 0x01030A00?"mbedTLS":"PolarSSL",
663 version>>24, (version>>16)&0xff, (version>>8)&0xff);
667 polarssl_connect_common(struct connectdata *conn,
673 struct Curl_easy *data = conn->data;
674 struct ssl_connect_data *connssl = &conn->ssl[sockindex];
675 curl_socket_t sockfd = conn->sock[sockindex];
679 /* check if the connection has already been established */
680 if(ssl_connection_complete == connssl->state) {
685 if(ssl_connect_1 == connssl->connecting_state) {
686 /* Find out how much more time we're allowed */
687 timeout_ms = Curl_timeleft(data, NULL, TRUE);
690 /* no need to continue if time already is up */
691 failf(data, "SSL connection timeout");
692 return CURLE_OPERATION_TIMEDOUT;
695 result = polarssl_connect_step1(conn, sockindex);
700 while(ssl_connect_2 == connssl->connecting_state ||
701 ssl_connect_2_reading == connssl->connecting_state ||
702 ssl_connect_2_writing == connssl->connecting_state) {
704 /* check allowed time left */
705 timeout_ms = Curl_timeleft(data, NULL, TRUE);
708 /* no need to continue if time already is up */
709 failf(data, "SSL connection timeout");
710 return CURLE_OPERATION_TIMEDOUT;
713 /* if ssl is expecting something, check if it's available. */
714 if(connssl->connecting_state == ssl_connect_2_reading ||
715 connssl->connecting_state == ssl_connect_2_writing) {
717 curl_socket_t writefd = ssl_connect_2_writing==
718 connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
719 curl_socket_t readfd = ssl_connect_2_reading==
720 connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
722 what = Curl_socket_check(readfd, CURL_SOCKET_BAD, writefd,
723 nonblocking?0:timeout_ms);
726 failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
727 return CURLE_SSL_CONNECT_ERROR;
736 failf(data, "SSL connection timeout");
737 return CURLE_OPERATION_TIMEDOUT;
740 /* socket is readable or writable */
743 /* Run transaction, and return to the caller if it failed or if
744 * this connection is part of a multi handle and this loop would
745 * execute again. This permits the owner of a multi handle to
746 * abort a connection attempt before step2 has completed while
747 * ensuring that a client using select() or epoll() will always
748 * have a valid fdset to wait on.
750 result = polarssl_connect_step2(conn, sockindex);
751 if(result || (nonblocking &&
752 (ssl_connect_2 == connssl->connecting_state ||
753 ssl_connect_2_reading == connssl->connecting_state ||
754 ssl_connect_2_writing == connssl->connecting_state)))
757 } /* repeat step2 until all transactions are done. */
759 if(ssl_connect_3 == connssl->connecting_state) {
760 result = polarssl_connect_step3(conn, sockindex);
765 if(ssl_connect_done == connssl->connecting_state) {
766 connssl->state = ssl_connection_complete;
767 conn->recv[sockindex] = polarssl_recv;
768 conn->send[sockindex] = polarssl_send;
774 /* Reset our connect state machine */
775 connssl->connecting_state = ssl_connect_1;
781 Curl_polarssl_connect_nonblocking(struct connectdata *conn,
785 return polarssl_connect_common(conn, sockindex, TRUE, done);
790 Curl_polarssl_connect(struct connectdata *conn,
796 result = polarssl_connect_common(conn, sockindex, FALSE, &done);
806 * return 0 error initializing SSL
807 * return 1 SSL initialized successfully
809 int Curl_polarssl_init(void)
811 return Curl_polarsslthreadlock_thread_setup();
814 void Curl_polarssl_cleanup(void)
816 (void)Curl_polarsslthreadlock_thread_cleanup();
820 int Curl_polarssl_data_pending(const struct connectdata *conn, int sockindex)
822 return ssl_get_bytes_avail(&conn->ssl[sockindex].ssl) != 0;
825 #endif /* USE_POLARSSL */