--- /dev/null
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 2010 - 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com>
+ * Copyright (C) 2012 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+/*
+ * Source file for all mbedTSL-specific code for the TLS/SSL layer. No code
+ * but vtls.c should ever call or use these functions.
+ *
+ */
+
+#include "curl_setup.h"
+
+#ifdef USE_MBEDTLS
+
+#include <mbedtls/net.h>
+#include <mbedtls/ssl.h>
+#include <mbedtls/certs.h>
+#include <mbedtls/x509.h>
+#include <mbedtls/version.h>
+
+#include <mbedtls/error.h>
+#include <mbedtls/entropy.h>
+#include <mbedtls/ctr_drbg.h>
+
+#include "urldata.h"
+#include "sendf.h"
+#include "inet_pton.h"
+#include "mbedtls.h"
+#include "vtls.h"
+#include "parsedate.h"
+#include "connect.h" /* for the connect timeout */
+#include "select.h"
+#include "rawstr.h"
+#include "polarssl_threadlock.h"
+
+#define _MPRINTF_REPLACE /* use our functions only */
+#include <curl/mprintf.h>
+#include "curl_memory.h"
+/* The last #include file should be: */
+#include "memdebug.h"
+
+/* apply threading? */
+#if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
+#define THREADING_SUPPORT
+#endif
+
+#if defined(THREADING_SUPPORT)
+static mbedtls_entropy_context entropy;
+
+static int entropy_init_initialized = 0;
+
+/* start of entropy_init_mutex() */
+static void entropy_init_mutex(mbedtls_entropy_context *ctx)
+{
+ /* lock 0 = entropy_init_mutex() */
+ polarsslthreadlock_lock_function(0);
+ if(entropy_init_initialized == 0) {
+ mbedtls_entropy_init(ctx);
+ entropy_init_initialized = 1;
+ }
+ polarsslthreadlock_unlock_function(0);
+}
+/* end of entropy_init_mutex() */
+
+/* start of entropy_func_mutex() */
+static int entropy_func_mutex(void *data, unsigned char *output, size_t len)
+{
+ int ret;
+ /* lock 1 = entropy_func_mutex() */
+ polarsslthreadlock_lock_function(1);
+ ret = mbedtls_entropy_func(data, output, len);
+ polarsslthreadlock_unlock_function(1);
+
+ return ret;
+}
+/* end of entropy_func_mutex() */
+
+#endif /* THREADING_SUPPORT */
+
+/* Define this to enable lots of debugging for mbedTLS */
+#undef MBEDTLS_DEBUG
+
+#ifdef MBEDTLS_DEBUG
+static void mbedtls_debug(void *context, int level, const char *line)
+{
+ struct SessionHandle *data = NULL;
+
+ if(!context)
+ return;
+
+ data = (struct SessionHandle *)context;
+
+ infof(data, "%s", line);
+ (void) level;
+}
+#else
+#endif
+
+/* ALPN for http2? */
+#ifdef USE_NGHTTP2
+# undef HAS_ALPN
+# ifdef MBEDTLS_SSL_ALPN
+# define HAS_ALPN
+# endif
+#endif
+
+static Curl_recv mbedtls_recv;
+static Curl_send mbedtls_send;
+
+static CURLcode
+mbedtls_connect_step1(struct connectdata *conn,
+ int sockindex)
+{
+ struct SessionHandle *data = conn->data;
+ struct ssl_connect_data* connssl = &conn->ssl[sockindex];
+
+ bool sni = TRUE; /* default is SNI enabled */
+ int ret = -1;
+#ifdef ENABLE_IPV6
+ struct in6_addr addr;
+#else
+ struct in_addr addr;
+#endif
+ void *old_session = NULL;
+ size_t old_session_size = 0;
+ char errorbuf[128];
+ errorbuf[0]=0;
+
+ /* mbedTLS only supports SSLv3 and TLSv1 */
+ if(data->set.ssl.version == CURL_SSLVERSION_SSLv2) {
+ failf(data, "mbedTLS does not support SSLv2");
+ return CURLE_SSL_CONNECT_ERROR;
+ }
+ else if(data->set.ssl.version == CURL_SSLVERSION_SSLv3)
+ sni = FALSE; /* SSLv3 has no SNI */
+
+#ifdef THREADING_SUPPORT
+ entropy_init_mutex(&entropy);
+
+ if((ret = mbedtls_ctr_drbg_init(&connssl->ctr_drbg, entropy_func_mutex,
+ &entropy, connssl->ssn.id,
+ connssl->ssn.length)) != 0) {
+#ifdef MBEDTLS_ERROR_C
+ mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
+#endif /* MBEDTLS_ERROR_C */
+ failf(data, "Failed - mbedTLS: ctr_drbg_init returned (-0x%04X) %s\n",
+ -ret, errorbuf);
+ }
+#else
+ mbedtls_entropy_init(&connssl->entropy);
+ mbedtls_ctr_drbg_init(&connssl->ctr_drbg);
+
+ ret = mbedtls_ctr_drbg_seed(&connssl->ctr_drbg, mbedtls_entropy_func,
+ &connssl->entropy, connssl->ssn.id,
+ connssl->ssn.id_len);
+ if(ret) {
+#ifdef MBEDTLS_ERROR_C
+ mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
+#endif /* MBEDTLS_ERROR_C */
+ failf(data, "Failed - mbedTLS: ctr_drbg_init returned (-0x%04X) %s\n",
+ -ret, errorbuf);
+ }
+#endif /* THREADING_SUPPORT */
+
+ /* Load the trusted CA */
+ memset(&connssl->cacert, 0, sizeof(mbedtls_x509_crt));
+
+ if(data->set.str[STRING_SSL_CAFILE]) {
+ ret = mbedtls_x509_crt_parse_file(&connssl->cacert,
+ data->set.str[STRING_SSL_CAFILE]);
+
+ if(ret<0) {
+#ifdef MBEDTLS_ERROR_C
+ mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
+#endif /* MBEDTLS_ERROR_C */
+ failf(data, "Error reading ca cert file %s - mbedTLS: (-0x%04X) %s",
+ data->set.str[STRING_SSL_CAFILE], -ret, errorbuf);
+
+ if(data->set.ssl.verifypeer)
+ return CURLE_SSL_CACERT_BADFILE;
+ }
+ }
+
+ if(data->set.str[STRING_SSL_CAPATH]) {
+ ret = mbedtls_x509_crt_parse_path(&connssl->cacert,
+ data->set.str[STRING_SSL_CAPATH]);
+
+ if(ret<0) {
+#ifdef MBEDTLS_ERROR_C
+ mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
+#endif /* MBEDTLS_ERROR_C */
+ failf(data, "Error reading ca cert path %s - mbedTLS: (-0x%04X) %s",
+ data->set.str[STRING_SSL_CAPATH], -ret, errorbuf);
+
+ if(data->set.ssl.verifypeer)
+ return CURLE_SSL_CACERT_BADFILE;
+ }
+ }
+
+ /* Load the client certificate */
+ memset(&connssl->clicert, 0, sizeof(mbedtls_x509_crt));
+
+ if(data->set.str[STRING_CERT]) {
+ ret = mbedtls_x509_crt_parse_file(&connssl->clicert,
+ data->set.str[STRING_CERT]);
+
+ if(ret) {
+#ifdef MBEDTLS_ERROR_C
+ mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
+#endif /* MBEDTLS_ERROR_C */
+ failf(data, "Error reading client cert file %s - mbedTLS: (-0x%04X) %s",
+ data->set.str[STRING_CERT], -ret, errorbuf);
+
+ return CURLE_SSL_CERTPROBLEM;
+ }
+ }
+
+ /* Load the client private key */
+ if(data->set.str[STRING_KEY]) {
+ mbedtls_pk_init(&connssl->pk);
+ ret = mbedtls_pk_parse_keyfile(&connssl->pk, data->set.str[STRING_KEY],
+ data->set.str[STRING_KEY_PASSWD]);
+ if(ret == 0 && !mbedtls_pk_can_do(&connssl->pk, MBEDTLS_PK_RSA))
+ ret = MBEDTLS_ERR_PK_TYPE_MISMATCH;
+
+ if(ret) {
+#ifdef MBEDTLS_ERROR_C
+ mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
+#endif /* MBEDTLS_ERROR_C */
+ failf(data, "Error reading private key %s - mbedTLS: (-0x%04X) %s",
+ data->set.str[STRING_KEY], -ret, errorbuf);
+
+ return CURLE_SSL_CERTPROBLEM;
+ }
+ }
+
+ /* Load the CRL */
+ memset(&connssl->crl, 0, sizeof(mbedtls_x509_crl));
+
+ if(data->set.str[STRING_SSL_CRLFILE]) {
+ ret = mbedtls_x509_crl_parse_file(&connssl->crl,
+ data->set.str[STRING_SSL_CRLFILE]);
+
+ if(ret) {
+#ifdef MBEDTLS_ERROR_C
+ mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
+#endif /* MBEDTLS_ERROR_C */
+ failf(data, "Error reading CRL file %s - mbedTLS: (-0x%04X) %s",
+ data->set.str[STRING_SSL_CRLFILE], -ret, errorbuf);
+
+ return CURLE_SSL_CRL_BADFILE;
+ }
+ }
+
+ infof(data, "mbedTLS: Connecting to %s:%d\n",
+ conn->host.name, conn->remote_port);
+
+
+ mbedtls_ssl_config_init(&connssl->config);
+
+ mbedtls_ssl_init(&connssl->ssl);
+ if(mbedtls_ssl_setup(&connssl->ssl, &connssl->config)) {
+ failf(data, "mbedTLS: ssl_init failed");
+ return CURLE_SSL_CONNECT_ERROR;
+ }
+ ret = mbedtls_ssl_config_defaults(&connssl->config,
+ MBEDTLS_SSL_IS_CLIENT,
+ MBEDTLS_SSL_TRANSPORT_STREAM,
+ MBEDTLS_SSL_PRESET_DEFAULT);
+ if(ret) {
+ failf(data, "mbedTLS: ssl_config failed");
+ return CURLE_SSL_CONNECT_ERROR;
+ }
+
+ switch(data->set.ssl.version) {
+ case CURL_SSLVERSION_SSLv3:
+ mbedtls_ssl_conf_min_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3,
+ MBEDTLS_SSL_MINOR_VERSION_0);
+ infof(data, "mbedTLS: Forced min. SSL Version to be SSLv3\n");
+ break;
+ case CURL_SSLVERSION_TLSv1_0:
+ mbedtls_ssl_conf_min_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3,
+ MBEDTLS_SSL_MINOR_VERSION_1);
+ infof(data, "mbedTLS: Forced min. SSL Version to be TLS 1.0\n");
+ break;
+ case CURL_SSLVERSION_TLSv1_1:
+ mbedtls_ssl_conf_min_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3,
+ MBEDTLS_SSL_MINOR_VERSION_2);
+ infof(data, "mbedTLS: Forced min. SSL Version to be TLS 1.1\n");
+ break;
+ case CURL_SSLVERSION_TLSv1_2:
+ mbedtls_ssl_conf_min_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3,
+ MBEDTLS_SSL_MINOR_VERSION_3);
+ infof(data, "mbedTLS: Forced min. SSL Version to be TLS 1.2\n");
+ break;
+ }
+
+ mbedtls_ssl_conf_authmode(&connssl->config, MBEDTLS_SSL_VERIFY_OPTIONAL);
+
+ mbedtls_ssl_conf_rng(&connssl->config, mbedtls_ctr_drbg_random,
+ &connssl->ctr_drbg);
+ mbedtls_ssl_set_bio(&connssl->ssl, &conn->sock[sockindex],
+ mbedtls_net_send,
+ mbedtls_net_recv,
+ NULL /* rev_timeout() */);
+
+ mbedtls_ssl_conf_ciphersuites(&connssl->config,
+ mbedtls_ssl_list_ciphersuites());
+ if(!Curl_ssl_getsessionid(conn, &old_session, &old_session_size)) {
+ memcpy(&connssl->ssn, old_session, old_session_size);
+ infof(data, "mbedTLS re-using session\n");
+ }
+
+ mbedtls_ssl_set_session(&connssl->ssl,
+ &connssl->ssn);
+
+ mbedtls_ssl_conf_ca_chain(&connssl->config,
+ &connssl->cacert,
+ &connssl->crl);
+
+ if(data->set.str[STRING_KEY]) {
+ mbedtls_ssl_conf_own_cert(&connssl->config,
+ &connssl->clicert, &connssl->pk);
+ }
+ if(!Curl_inet_pton(AF_INET, conn->host.name, &addr) &&
+#ifdef ENABLE_IPV6
+ !Curl_inet_pton(AF_INET6, conn->host.name, &addr) &&
+#endif
+ sni && mbedtls_ssl_set_hostname(&connssl->ssl, conn->host.name)) {
+ infof(data, "WARNING: failed to configure "
+ "server name indication (SNI) TLS extension\n");
+ }
+
+#ifdef HAS_ALPN
+ if(data->set.httpversion == CURL_HTTP_VERSION_2_0) {
+ if(data->set.ssl_enable_alpn) {
+ static const char* protocols[] = {
+ NGHTTP2_PROTO_VERSION_ID, ALPN_HTTP_1_1, NULL
+ };
+ mbedtls_ssl_conf_alpn_protocols(&connssl->config, protocols);
+ infof(data, "ALPN, offering %s, %s\n", protocols[0],
+ protocols[1]);
+ }
+ }
+#endif
+
+#ifdef MBEDTLS_DEBUG
+ mbedtls_ssl_conf_dbg(&connssl->ssl, mbedtls_debug, data);
+#endif
+
+ connssl->connecting_state = ssl_connect_2;
+
+ return CURLE_OK;
+}
+
+static CURLcode
+mbedtls_connect_step2(struct connectdata *conn,
+ int sockindex)
+{
+ int ret;
+ struct SessionHandle *data = conn->data;
+ struct ssl_connect_data* connssl = &conn->ssl[sockindex];
+ char buffer[1024];
+
+#ifdef HAS_ALPN
+ const char* next_protocol;
+#endif
+
+ char errorbuf[128];
+ errorbuf[0] = 0;
+
+ conn->recv[sockindex] = mbedtls_recv;
+ conn->send[sockindex] = mbedtls_send;
+
+ for(;;) {
+ if(!(ret = mbedtls_ssl_handshake(&connssl->ssl)))
+ break;
+ else if(ret != MBEDTLS_ERR_SSL_WANT_READ &&
+ ret != MBEDTLS_ERR_SSL_WANT_WRITE) {
+#ifdef MBEDTLS_ERROR_C
+ mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
+#endif /* MBEDTLS_ERROR_C */
+ failf(data, "ssl_handshake returned - mbedTLS: (-0x%04X) %s",
+ -ret, errorbuf);
+
+ return CURLE_SSL_CONNECT_ERROR;
+ }
+ else {
+ if(ret == MBEDTLS_ERR_SSL_WANT_READ) {
+ connssl->connecting_state = ssl_connect_2_reading;
+ return CURLE_OK;
+ }
+ if(ret == MBEDTLS_ERR_SSL_WANT_WRITE) {
+ connssl->connecting_state = ssl_connect_2_writing;
+ return CURLE_OK;
+ }
+ failf(data, "SSL_connect failed with error %d.", ret);
+ return CURLE_SSL_CONNECT_ERROR;
+
+ }
+ }
+
+ infof(data, "mbedTLS: Handshake complete, cipher is %s\n",
+ mbedtls_ssl_get_ciphersuite(&conn->ssl[sockindex].ssl)
+ );
+
+ ret = mbedtls_ssl_get_verify_result(&conn->ssl[sockindex].ssl);
+
+ if(ret && data->set.ssl.verifypeer) {
+ if(ret & MBEDTLS_X509_BADCERT_EXPIRED)
+ failf(data, "Cert verify failed: BADCERT_EXPIRED");
+
+ if(ret & MBEDTLS_X509_BADCERT_REVOKED) {
+ failf(data, "Cert verify failed: BADCERT_REVOKED");
+ return CURLE_SSL_CACERT;
+ }
+
+ if(ret & MBEDTLS_X509_BADCERT_CN_MISMATCH)
+ failf(data, "Cert verify failed: BADCERT_CN_MISMATCH");
+
+ if(ret & MBEDTLS_X509_BADCERT_NOT_TRUSTED)
+ failf(data, "Cert verify failed: BADCERT_NOT_TRUSTED");
+
+ return CURLE_PEER_FAILED_VERIFICATION;
+ }
+
+ if(mbedtls_ssl_get_peer_cert(&(connssl->ssl))) {
+ /* If the session was resumed, there will be no peer certs */
+ memset(buffer, 0, sizeof(buffer));
+
+ if(mbedtls_x509_crt_info(buffer, sizeof(buffer), (char *)"* ",
+ mbedtls_ssl_get_peer_cert(&(connssl->ssl))) != -1)
+ infof(data, "Dumping cert info:\n%s\n", buffer);
+ }
+
+#ifdef HAS_ALPN
+ if(data->set.ssl_enable_alpn) {
+ next_protocol = mbedtls_ssl_get_alpn_protocol(&connssl->ssl);
+
+ if(next_protocol != NULL) {
+ infof(data, "ALPN, server accepted to use %s\n", next_protocol);
+
+ if(strncmp(next_protocol, NGHTTP2_PROTO_VERSION_ID,
+ NGHTTP2_PROTO_VERSION_ID_LEN)) {
+ conn->negnpn = CURL_HTTP_VERSION_2_0;
+ }
+ else if(strncmp(next_protocol, ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH)) {
+ conn->negnpn = CURL_HTTP_VERSION_1_1;
+ }
+ }
+ else {
+ infof(data, "ALPN, server did not agree to a protocol\n");
+ }
+ }
+#endif
+
+ connssl->connecting_state = ssl_connect_3;
+ infof(data, "SSL connected\n");
+
+ return CURLE_OK;
+}
+
+static CURLcode
+mbedtls_connect_step3(struct connectdata *conn,
+ int sockindex)
+{
+ CURLcode retcode = CURLE_OK;
+ struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+ struct SessionHandle *data = conn->data;
+ void *old_ssl_sessionid = NULL;
+ mbedtls_ssl_session *our_ssl_sessionid = &conn->ssl[sockindex].ssn;
+ int incache;
+
+ DEBUGASSERT(ssl_connect_3 == connssl->connecting_state);
+
+ /* Save the current session data for possible re-use */
+ incache = !(Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL));
+ if(incache) {
+ if(old_ssl_sessionid != our_ssl_sessionid) {
+ infof(data, "old SSL session ID is stale, removing\n");
+ Curl_ssl_delsessionid(conn, old_ssl_sessionid);
+ incache = FALSE;
+ }
+ }
+ if(!incache) {
+ void *new_session = malloc(sizeof(mbedtls_ssl_session));
+
+ if(new_session) {
+ memcpy(new_session, our_ssl_sessionid,
+ sizeof(mbedtls_ssl_session));
+
+ retcode = Curl_ssl_addsessionid(conn, new_session,
+ sizeof(mbedtls_ssl_session));
+ }
+ else {
+ retcode = CURLE_OUT_OF_MEMORY;
+ }
+
+ if(retcode) {
+ failf(data, "failed to store ssl session");
+ return retcode;
+ }
+ }
+
+ connssl->connecting_state = ssl_connect_done;
+
+ return CURLE_OK;
+}
+
+static ssize_t mbedtls_send(struct connectdata *conn,
+ int sockindex,
+ const void *mem,
+ size_t len,
+ CURLcode *curlcode)
+{
+ int ret = -1;
+
+ ret = mbedtls_ssl_write(&conn->ssl[sockindex].ssl,
+ (unsigned char *)mem, len);
+
+ if(ret < 0) {
+ *curlcode = (ret == MBEDTLS_ERR_SSL_WANT_WRITE) ?
+ CURLE_AGAIN : CURLE_SEND_ERROR;
+ ret = -1;
+ }
+
+ return ret;
+}
+
+void Curl_mbedtls_close_all(struct SessionHandle *data)
+{
+ (void)data;
+}
+
+void Curl_mbedtls_close(struct connectdata *conn, int sockindex)
+{
+ /* mbedtls_rsa_free(&conn->ssl[sockindex].rsa); */
+ mbedtls_x509_crt_free(&conn->ssl[sockindex].clicert);
+ mbedtls_x509_crt_free(&conn->ssl[sockindex].cacert);
+ mbedtls_x509_crl_free(&conn->ssl[sockindex].crl);
+ mbedtls_ssl_free(&conn->ssl[sockindex].ssl);
+}
+
+static ssize_t mbedtls_recv(struct connectdata *conn,
+ int num,
+ char *buf,
+ size_t buffersize,
+ CURLcode *curlcode)
+{
+ int ret = -1;
+ ssize_t len = -1;
+
+ memset(buf, 0, buffersize);
+ ret = mbedtls_ssl_read(&conn->ssl[num].ssl, (unsigned char *)buf,
+ buffersize);
+
+ if(ret <= 0) {
+ if(ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY)
+ return 0;
+
+ *curlcode = (ret == MBEDTLS_ERR_SSL_WANT_READ) ?
+ CURLE_AGAIN : CURLE_RECV_ERROR;
+ return -1;
+ }
+
+ len = ret;
+
+ return len;
+}
+
+void Curl_mbedtls_session_free(void *ptr)
+{
+ free(ptr);
+}
+
+size_t Curl_mbedtls_version(char *buffer, size_t size)
+{
+ unsigned int version = mbedtls_version_get_number();
+ return snprintf(buffer, size, "mbedTLS/%d.%d.%d", version>>24,
+ (version>>16)&0xff, (version>>8)&0xff);
+}
+
+static CURLcode
+mbedtls_connect_common(struct connectdata *conn,
+ int sockindex,
+ bool nonblocking,
+ bool *done)
+{
+ CURLcode retcode;
+ struct SessionHandle *data = conn->data;
+ struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+ curl_socket_t sockfd = conn->sock[sockindex];
+ long timeout_ms;
+ int what;
+
+ /* check if the connection has already been established */
+ if(ssl_connection_complete == connssl->state) {
+ *done = TRUE;
+ return CURLE_OK;
+ }
+
+ if(ssl_connect_1==connssl->connecting_state) {
+ /* Find out how much more time we're allowed */
+ timeout_ms = Curl_timeleft(data, NULL, TRUE);
+
+ if(timeout_ms < 0) {
+ /* no need to continue if time already is up */
+ failf(data, "SSL connection timeout");
+ return CURLE_OPERATION_TIMEDOUT;
+ }
+ retcode = mbedtls_connect_step1(conn, sockindex);
+ if(retcode)
+ return retcode;
+ }
+
+ while(ssl_connect_2 == connssl->connecting_state ||
+ ssl_connect_2_reading == connssl->connecting_state ||
+ ssl_connect_2_writing == connssl->connecting_state) {
+
+ /* check allowed time left */
+ timeout_ms = Curl_timeleft(data, NULL, TRUE);
+
+ if(timeout_ms < 0) {
+ /* no need to continue if time already is up */
+ failf(data, "SSL connection timeout");
+ return CURLE_OPERATION_TIMEDOUT;
+ }
+
+ /* if ssl is expecting something, check if it's available. */
+ if(connssl->connecting_state == ssl_connect_2_reading
+ || connssl->connecting_state == ssl_connect_2_writing) {
+
+ curl_socket_t writefd = ssl_connect_2_writing==
+ connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
+ curl_socket_t readfd = ssl_connect_2_reading==
+ connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
+
+ what = Curl_socket_ready(readfd, writefd, nonblocking ? 0 : timeout_ms);
+ if(what < 0) {
+ /* fatal error */
+ failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
+ return CURLE_SSL_CONNECT_ERROR;
+ }
+ else if(0 == what) {
+ if(nonblocking) {
+ *done = FALSE;
+ return CURLE_OK;
+ }
+ else {
+ /* timeout */
+ failf(data, "SSL connection timeout");
+ return CURLE_OPERATION_TIMEDOUT;
+ }
+ }
+ /* socket is readable or writable */
+ }
+
+ /* Run transaction, and return to the caller if it failed or if
+ * this connection is part of a multi handle and this loop would
+ * execute again. This permits the owner of a multi handle to
+ * abort a connection attempt before step2 has completed while
+ * ensuring that a client using select() or epoll() will always
+ * have a valid fdset to wait on.
+ */
+ retcode = mbedtls_connect_step2(conn, sockindex);
+ if(retcode || (nonblocking &&
+ (ssl_connect_2 == connssl->connecting_state ||
+ ssl_connect_2_reading == connssl->connecting_state ||
+ ssl_connect_2_writing == connssl->connecting_state)))
+ return retcode;
+
+ } /* repeat step2 until all transactions are done. */
+
+ if(ssl_connect_3==connssl->connecting_state) {
+ retcode = mbedtls_connect_step3(conn, sockindex);
+ if(retcode)
+ return retcode;
+ }
+
+ if(ssl_connect_done==connssl->connecting_state) {
+ connssl->state = ssl_connection_complete;
+ conn->recv[sockindex] = mbedtls_recv;
+ conn->send[sockindex] = mbedtls_send;
+ *done = TRUE;
+ }
+ else
+ *done = FALSE;
+
+ /* Reset our connect state machine */
+ connssl->connecting_state = ssl_connect_1;
+
+ return CURLE_OK;
+}
+
+CURLcode
+Curl_mbedtls_connect_nonblocking(struct connectdata *conn,
+ int sockindex,
+ bool *done)
+{
+ return mbedtls_connect_common(conn, sockindex, TRUE, done);
+}
+
+
+CURLcode
+Curl_mbedtls_connect(struct connectdata *conn,
+ int sockindex)
+{
+ CURLcode retcode;
+ bool done = FALSE;
+
+ retcode = mbedtls_connect_common(conn, sockindex, FALSE, &done);
+ if(retcode)
+ return retcode;
+
+ DEBUGASSERT(done);
+
+ return CURLE_OK;
+}
+
+/*
+ * return 0 error initializing SSL
+ * return 1 SSL initialized successfully
+ */
+int mbedtls_init(void)
+{
+ return polarsslthreadlock_thread_setup();
+}
+
+void mbedtls_cleanup(void)
+{
+ (void)polarsslthreadlock_thread_cleanup();
+}
+
+#endif /* USE_MBEDTLS */
projects / curl / commitdiff