| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) 2012 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al. |
| * Copyright (C) 2010 - 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com> |
| * |
| * 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 https://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 PolarSSL-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_POLARSSL |
| |
| #include <polarssl/net.h> |
| #include <polarssl/ssl.h> |
| #include <polarssl/certs.h> |
| #include <polarssl/x509.h> |
| #include <polarssl/version.h> |
| #include <polarssl/sha256.h> |
| |
| #if POLARSSL_VERSION_NUMBER < 0x01030000 |
| #error too old PolarSSL |
| #endif |
| |
| #include <polarssl/error.h> |
| #include <polarssl/entropy.h> |
| #include <polarssl/ctr_drbg.h> |
| |
| #include "urldata.h" |
| #include "sendf.h" |
| #include "inet_pton.h" |
| #include "polarssl.h" |
| #include "vtls.h" |
| #include "parsedate.h" |
| #include "connect.h" /* for the connect timeout */ |
| #include "select.h" |
| #include "strcase.h" |
| #include "polarssl_threadlock.h" |
| #include "curl_printf.h" |
| #include "curl_memory.h" |
| /* The last #include file should be: */ |
| #include "memdebug.h" |
| |
| /* See https://tls.mbed.org/discussions/generic/ |
| howto-determine-exact-buffer-len-for-mbedtls_pk_write_pubkey_der |
| */ |
| #define RSA_PUB_DER_MAX_BYTES (38 + 2 * POLARSSL_MPI_MAX_SIZE) |
| #define ECP_PUB_DER_MAX_BYTES (30 + 2 * POLARSSL_ECP_MAX_BYTES) |
| |
| #define PUB_DER_MAX_BYTES (RSA_PUB_DER_MAX_BYTES > ECP_PUB_DER_MAX_BYTES ? \ |
| RSA_PUB_DER_MAX_BYTES : ECP_PUB_DER_MAX_BYTES) |
| |
| /* apply threading? */ |
| #if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32) |
| #define THREADING_SUPPORT |
| #endif |
| |
| #ifndef POLARSSL_ERROR_C |
| #define error_strerror(x,y,z) |
| #endif /* POLARSSL_ERROR_C */ |
| |
| |
| #if defined(THREADING_SUPPORT) |
| static entropy_context entropy; |
| |
| static int entropy_init_initialized = 0; |
| |
| /* start of entropy_init_mutex() */ |
| static void entropy_init_mutex(entropy_context *ctx) |
| { |
| /* lock 0 = entropy_init_mutex() */ |
| Curl_polarsslthreadlock_lock_function(0); |
| if(entropy_init_initialized == 0) { |
| entropy_init(ctx); |
| entropy_init_initialized = 1; |
| } |
| Curl_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() */ |
| Curl_polarsslthreadlock_lock_function(1); |
| ret = entropy_func(data, output, len); |
| Curl_polarsslthreadlock_unlock_function(1); |
| |
| return ret; |
| } |
| /* end of entropy_func_mutex() */ |
| |
| #endif /* THREADING_SUPPORT */ |
| |
| /* Define this to enable lots of debugging for PolarSSL */ |
| #undef POLARSSL_DEBUG |
| |
| #ifdef POLARSSL_DEBUG |
| static void polarssl_debug(void *context, int level, const char *line) |
| { |
| struct Curl_easy *data = NULL; |
| |
| if(!context) |
| return; |
| |
| data = (struct Curl_easy *)context; |
| |
| infof(data, "%s", line); |
| (void) level; |
| } |
| #else |
| #endif |
| |
| /* ALPN for http2? */ |
| #ifdef POLARSSL_SSL_ALPN |
| # define HAS_ALPN |
| #endif |
| |
| static Curl_recv polarssl_recv; |
| static Curl_send polarssl_send; |
| |
| static CURLcode polarssl_version_from_curl(int *polarver, long ssl_version) |
| { |
| switch(ssl_version) { |
| case CURL_SSLVERSION_TLSv1_0: |
| *polarver = SSL_MINOR_VERSION_1; |
| return CURLE_OK; |
| case CURL_SSLVERSION_TLSv1_1: |
| *polarver = SSL_MINOR_VERSION_2; |
| return CURLE_OK; |
| case CURL_SSLVERSION_TLSv1_2: |
| *polarver = SSL_MINOR_VERSION_3; |
| return CURLE_OK; |
| case CURL_SSLVERSION_TLSv1_3: |
| break; |
| } |
| return CURLE_SSL_CONNECT_ERROR; |
| } |
| |
| static CURLcode |
| set_ssl_version_min_max(struct connectdata *conn, int sockindex) |
| { |
| struct Curl_easy *data = conn->data; |
| struct ssl_connect_data* connssl = &conn->ssl[sockindex]; |
| long ssl_version = SSL_CONN_CONFIG(version); |
| long ssl_version_max = SSL_CONN_CONFIG(version_max); |
| int ssl_min_ver = SSL_MINOR_VERSION_1; |
| int ssl_max_ver = SSL_MINOR_VERSION_1; |
| CURLcode result = CURLE_OK; |
| |
| switch(ssl_version) { |
| case CURL_SSLVERSION_DEFAULT: |
| case CURL_SSLVERSION_TLSv1: |
| ssl_version = CURL_SSLVERSION_TLSv1_0; |
| ssl_version_max = CURL_SSLVERSION_MAX_TLSv1_2; |
| break; |
| } |
| |
| switch(ssl_version_max) { |
| case CURL_SSLVERSION_MAX_NONE: |
| ssl_version_max = ssl_version << 16; |
| break; |
| case CURL_SSLVERSION_MAX_DEFAULT: |
| ssl_version_max = CURL_SSLVERSION_MAX_TLSv1_2; |
| break; |
| } |
| |
| result = polarssl_version_from_curl(&ssl_min_ver, ssl_version); |
| if(result) { |
| failf(data, "unsupported min version passed via CURLOPT_SSLVERSION"); |
| return result; |
| } |
| result = polarssl_version_from_curl(&ssl_max_ver, ssl_version_max >> 16); |
| if(result) { |
| failf(data, "unsupported max version passed via CURLOPT_SSLVERSION"); |
| return result; |
| } |
| |
| ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3, ssl_min_ver); |
| ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3, ssl_max_ver); |
| |
| return result; |
| } |
| |
| static CURLcode |
| polarssl_connect_step1(struct connectdata *conn, |
| int sockindex) |
| { |
| struct Curl_easy *data = conn->data; |
| struct ssl_connect_data* connssl = &conn->ssl[sockindex]; |
| const char *capath = SSL_CONN_CONFIG(CApath); |
| const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name : |
| conn->host.name; |
| const long int port = SSL_IS_PROXY() ? conn->port : conn->remote_port; |
| int ret = -1; |
| char errorbuf[128]; |
| errorbuf[0]=0; |
| |
| /* PolarSSL only supports SSLv3 and TLSv1 */ |
| if(SSL_CONN_CONFIG(version) == CURL_SSLVERSION_SSLv2) { |
| failf(data, "PolarSSL does not support SSLv2"); |
| return CURLE_SSL_CONNECT_ERROR; |
| } |
| |
| #ifdef THREADING_SUPPORT |
| entropy_init_mutex(&entropy); |
| |
| if((ret = ctr_drbg_init(&connssl->ctr_drbg, entropy_func_mutex, &entropy, |
| NULL, 0)) != 0) { |
| error_strerror(ret, errorbuf, sizeof(errorbuf)); |
| failf(data, "Failed - PolarSSL: ctr_drbg_init returned (-0x%04X) %s\n", |
| -ret, errorbuf); |
| } |
| #else |
| entropy_init(&connssl->entropy); |
| |
| if((ret = ctr_drbg_init(&connssl->ctr_drbg, entropy_func, &connssl->entropy, |
| NULL, 0)) != 0) { |
| error_strerror(ret, errorbuf, sizeof(errorbuf)); |
| failf(data, "Failed - PolarSSL: ctr_drbg_init returned (-0x%04X) %s\n", |
| -ret, errorbuf); |
| } |
| #endif /* THREADING_SUPPORT */ |
| |
| /* Load the trusted CA */ |
| memset(&connssl->cacert, 0, sizeof(x509_crt)); |
| |
| if(SSL_CONN_CONFIG(CAfile)) { |
| ret = x509_crt_parse_file(&connssl->cacert, |
| SSL_CONN_CONFIG(CAfile)); |
| |
| if(ret<0) { |
| error_strerror(ret, errorbuf, sizeof(errorbuf)); |
| failf(data, "Error reading ca cert file %s - PolarSSL: (-0x%04X) %s", |
| SSL_CONN_CONFIG(CAfile), -ret, errorbuf); |
| |
| if(SSL_CONN_CONFIG(verifypeer)) |
| return CURLE_SSL_CACERT_BADFILE; |
| } |
| } |
| |
| if(capath) { |
| ret = x509_crt_parse_path(&connssl->cacert, capath); |
| |
| if(ret<0) { |
| error_strerror(ret, errorbuf, sizeof(errorbuf)); |
| failf(data, "Error reading ca cert path %s - PolarSSL: (-0x%04X) %s", |
| capath, -ret, errorbuf); |
| |
| if(SSL_CONN_CONFIG(verifypeer)) |
| return CURLE_SSL_CACERT_BADFILE; |
| } |
| } |
| |
| /* Load the client certificate */ |
| memset(&connssl->clicert, 0, sizeof(x509_crt)); |
| |
| if(SSL_SET_OPTION(cert)) { |
| ret = x509_crt_parse_file(&connssl->clicert, |
| SSL_SET_OPTION(cert)); |
| |
| if(ret) { |
| error_strerror(ret, errorbuf, sizeof(errorbuf)); |
| failf(data, "Error reading client cert file %s - PolarSSL: (-0x%04X) %s", |
| SSL_SET_OPTION(cert), -ret, errorbuf); |
| |
| return CURLE_SSL_CERTPROBLEM; |
| } |
| } |
| |
| /* Load the client private key */ |
| if(SSL_SET_OPTION(key)) { |
| pk_context pk; |
| pk_init(&pk); |
| ret = pk_parse_keyfile(&pk, SSL_SET_OPTION(key), |
| SSL_SET_OPTION(key_passwd)); |
| if(ret == 0 && !pk_can_do(&pk, POLARSSL_PK_RSA)) |
| ret = POLARSSL_ERR_PK_TYPE_MISMATCH; |
| if(ret == 0) |
| rsa_copy(&connssl->rsa, pk_rsa(pk)); |
| else |
| rsa_free(&connssl->rsa); |
| pk_free(&pk); |
| |
| if(ret) { |
| error_strerror(ret, errorbuf, sizeof(errorbuf)); |
| failf(data, "Error reading private key %s - PolarSSL: (-0x%04X) %s", |
| SSL_SET_OPTION(key), -ret, errorbuf); |
| |
| return CURLE_SSL_CERTPROBLEM; |
| } |
| } |
| |
| /* Load the CRL */ |
| memset(&connssl->crl, 0, sizeof(x509_crl)); |
| |
| if(SSL_SET_OPTION(CRLfile)) { |
| ret = x509_crl_parse_file(&connssl->crl, |
| SSL_SET_OPTION(CRLfile)); |
| |
| if(ret) { |
| error_strerror(ret, errorbuf, sizeof(errorbuf)); |
| failf(data, "Error reading CRL file %s - PolarSSL: (-0x%04X) %s", |
| SSL_SET_OPTION(CRLfile), -ret, errorbuf); |
| |
| return CURLE_SSL_CRL_BADFILE; |
| } |
| } |
| |
| infof(data, "PolarSSL: Connecting to %s:%d\n", hostname, port); |
| |
| if(ssl_init(&connssl->ssl)) { |
| failf(data, "PolarSSL: ssl_init failed"); |
| return CURLE_SSL_CONNECT_ERROR; |
| } |
| |
| switch(SSL_CONN_CONFIG(version)) { |
| case CURL_SSLVERSION_DEFAULT: |
| case CURL_SSLVERSION_TLSv1: |
| ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3, |
| SSL_MINOR_VERSION_1); |
| break; |
| case CURL_SSLVERSION_SSLv3: |
| ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3, |
| SSL_MINOR_VERSION_0); |
| ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3, |
| SSL_MINOR_VERSION_0); |
| infof(data, "PolarSSL: Forced min. SSL Version to be SSLv3\n"); |
| break; |
| case CURL_SSLVERSION_TLSv1_0: |
| case CURL_SSLVERSION_TLSv1_1: |
| case CURL_SSLVERSION_TLSv1_2: |
| case CURL_SSLVERSION_TLSv1_3: |
| { |
| CURLcode result = set_ssl_version_min_max(conn, sockindex); |
| if(result != CURLE_OK) |
| return result; |
| break; |
| } |
| default: |
| failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION"); |
| return CURLE_SSL_CONNECT_ERROR; |
| } |
| |
| ssl_set_endpoint(&connssl->ssl, SSL_IS_CLIENT); |
| ssl_set_authmode(&connssl->ssl, SSL_VERIFY_OPTIONAL); |
| |
| ssl_set_rng(&connssl->ssl, ctr_drbg_random, |
| &connssl->ctr_drbg); |
| ssl_set_bio(&connssl->ssl, |
| net_recv, &conn->sock[sockindex], |
| net_send, &conn->sock[sockindex]); |
| |
| ssl_set_ciphersuites(&connssl->ssl, ssl_list_ciphersuites()); |
| |
| /* Check if there's a cached ID we can/should use here! */ |
| if(SSL_SET_OPTION(primary.sessionid)) { |
| void *old_session = NULL; |
| |
| Curl_ssl_sessionid_lock(conn); |
| if(!Curl_ssl_getsessionid(conn, &old_session, NULL, sockindex)) { |
| ret = ssl_set_session(&connssl->ssl, old_session); |
| if(ret) { |
| Curl_ssl_sessionid_unlock(conn); |
| failf(data, "ssl_set_session returned -0x%x", -ret); |
| return CURLE_SSL_CONNECT_ERROR; |
| } |
| infof(data, "PolarSSL re-using session\n"); |
| } |
| Curl_ssl_sessionid_unlock(conn); |
| } |
| |
| ssl_set_ca_chain(&connssl->ssl, |
| &connssl->cacert, |
| &connssl->crl, |
| hostname); |
| |
| ssl_set_own_cert_rsa(&connssl->ssl, |
| &connssl->clicert, &connssl->rsa); |
| |
| if(ssl_set_hostname(&connssl->ssl, hostname)) { |
| /* ssl_set_hostname() sets the name to use in CN/SAN checks *and* the name |
| to set in the SNI extension. So even if curl connects to a host |
| specified as an IP address, this function must be used. */ |
| failf(data, "couldn't set hostname in PolarSSL"); |
| return CURLE_SSL_CONNECT_ERROR; |
| } |
| |
| #ifdef HAS_ALPN |
| if(conn->bits.tls_enable_alpn) { |
| static const char *protocols[3]; |
| int cur = 0; |
| |
| #ifdef USE_NGHTTP2 |
| if(data->set.httpversion >= CURL_HTTP_VERSION_2) { |
| protocols[cur++] = NGHTTP2_PROTO_VERSION_ID; |
| infof(data, "ALPN, offering %s\n", NGHTTP2_PROTO_VERSION_ID); |
| } |
| #endif |
| |
| protocols[cur++] = ALPN_HTTP_1_1; |
| infof(data, "ALPN, offering %s\n", ALPN_HTTP_1_1); |
| |
| protocols[cur] = NULL; |
| |
| ssl_set_alpn_protocols(&connssl->ssl, protocols); |
| } |
| #endif |
| |
| #ifdef POLARSSL_DEBUG |
| ssl_set_dbg(&connssl->ssl, polarssl_debug, data); |
| #endif |
| |
| connssl->connecting_state = ssl_connect_2; |
| |
| return CURLE_OK; |
| } |
| |
| static CURLcode |
| polarssl_connect_step2(struct connectdata *conn, |
| int sockindex) |
| { |
| int ret; |
| struct Curl_easy *data = conn->data; |
| struct ssl_connect_data* connssl = &conn->ssl[sockindex]; |
| char buffer[1024]; |
| const char * const pinnedpubkey = SSL_IS_PROXY() ? |
| data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY] : |
| data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG]; |
| |
| |
| char errorbuf[128]; |
| errorbuf[0] = 0; |
| |
| conn->recv[sockindex] = polarssl_recv; |
| conn->send[sockindex] = polarssl_send; |
| |
| ret = ssl_handshake(&connssl->ssl); |
| |
| switch(ret) { |
| case 0: |
| break; |
| |
| case POLARSSL_ERR_NET_WANT_READ: |
| connssl->connecting_state = ssl_connect_2_reading; |
| return CURLE_OK; |
| |
| case POLARSSL_ERR_NET_WANT_WRITE: |
| connssl->connecting_state = ssl_connect_2_writing; |
| return CURLE_OK; |
| |
| default: |
| error_strerror(ret, errorbuf, sizeof(errorbuf)); |
| failf(data, "ssl_handshake returned - PolarSSL: (-0x%04X) %s", |
| -ret, errorbuf); |
| return CURLE_SSL_CONNECT_ERROR; |
| } |
| |
| infof(data, "PolarSSL: Handshake complete, cipher is %s\n", |
| ssl_get_ciphersuite(&conn->ssl[sockindex].ssl) ); |
| |
| ret = ssl_get_verify_result(&conn->ssl[sockindex].ssl); |
| |
| if(ret && SSL_CONN_CONFIG(verifypeer)) { |
| if(ret & BADCERT_EXPIRED) |
| failf(data, "Cert verify failed: BADCERT_EXPIRED"); |
| |
| if(ret & BADCERT_REVOKED) { |
| failf(data, "Cert verify failed: BADCERT_REVOKED"); |
| return CURLE_SSL_CACERT; |
| } |
| |
| if(ret & BADCERT_CN_MISMATCH) |
| failf(data, "Cert verify failed: BADCERT_CN_MISMATCH"); |
| |
| if(ret & BADCERT_NOT_TRUSTED) |
| failf(data, "Cert verify failed: BADCERT_NOT_TRUSTED"); |
| |
| return CURLE_PEER_FAILED_VERIFICATION; |
| } |
| |
| if(ssl_get_peer_cert(&(connssl->ssl))) { |
| /* If the session was resumed, there will be no peer certs */ |
| memset(buffer, 0, sizeof(buffer)); |
| |
| if(x509_crt_info(buffer, sizeof(buffer), (char *)"* ", |
| ssl_get_peer_cert(&(connssl->ssl))) != -1) |
| infof(data, "Dumping cert info:\n%s\n", buffer); |
| } |
| |
| /* adapted from mbedtls.c */ |
| if(pinnedpubkey) { |
| int size; |
| CURLcode result; |
| x509_crt *p; |
| unsigned char pubkey[PUB_DER_MAX_BYTES]; |
| const x509_crt *peercert; |
| |
| peercert = ssl_get_peer_cert(&connssl->ssl); |
| |
| if(!peercert || !peercert->raw.p || !peercert->raw.len) { |
| failf(data, "Failed due to missing peer certificate"); |
| return CURLE_SSL_PINNEDPUBKEYNOTMATCH; |
| } |
| |
| p = calloc(1, sizeof(*p)); |
| |
| if(!p) |
| return CURLE_OUT_OF_MEMORY; |
| |
| x509_crt_init(p); |
| |
| /* Make a copy of our const peercert because pk_write_pubkey_der |
| needs a non-const key, for now. |
| https://github.com/ARMmbed/mbedtls/issues/396 */ |
| if(x509_crt_parse_der(p, peercert->raw.p, peercert->raw.len)) { |
| failf(data, "Failed copying peer certificate"); |
| x509_crt_free(p); |
| free(p); |
| return CURLE_SSL_PINNEDPUBKEYNOTMATCH; |
| } |
| |
| size = pk_write_pubkey_der(&p->pk, pubkey, PUB_DER_MAX_BYTES); |
| |
| if(size <= 0) { |
| failf(data, "Failed copying public key from peer certificate"); |
| x509_crt_free(p); |
| free(p); |
| return CURLE_SSL_PINNEDPUBKEYNOTMATCH; |
| } |
| |
| /* pk_write_pubkey_der writes data at the end of the buffer. */ |
| result = Curl_pin_peer_pubkey(data, |
| pinnedpubkey, |
| &pubkey[PUB_DER_MAX_BYTES - size], size); |
| if(result) { |
| x509_crt_free(p); |
| free(p); |
| return result; |
| } |
| |
| x509_crt_free(p); |
| free(p); |
| } |
| |
| #ifdef HAS_ALPN |
| if(conn->bits.tls_enable_alpn) { |
| const char *next_protocol = ssl_get_alpn_protocol(&connssl->ssl); |
| |
| if(next_protocol != NULL) { |
| infof(data, "ALPN, server accepted to use %s\n", next_protocol); |
| |
| #ifdef USE_NGHTTP2 |
| if(!strncmp(next_protocol, NGHTTP2_PROTO_VERSION_ID, |
| NGHTTP2_PROTO_VERSION_ID_LEN)) { |
| conn->negnpn = CURL_HTTP_VERSION_2; |
| } |
| else |
| #endif |
| 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 |
| polarssl_connect_step3(struct connectdata *conn, |
| int sockindex) |
| { |
| CURLcode retcode = CURLE_OK; |
| struct ssl_connect_data *connssl = &conn->ssl[sockindex]; |
| struct Curl_easy *data = conn->data; |
| |
| DEBUGASSERT(ssl_connect_3 == connssl->connecting_state); |
| |
| if(SSL_SET_OPTION(primary.sessionid)) { |
| int ret; |
| ssl_session *our_ssl_sessionid; |
| void *old_ssl_sessionid = NULL; |
| |
| our_ssl_sessionid = malloc(sizeof(ssl_session)); |
| if(!our_ssl_sessionid) |
| return CURLE_OUT_OF_MEMORY; |
| |
| memset(our_ssl_sessionid, 0, sizeof(ssl_session)); |
| |
| ret = ssl_get_session(&connssl->ssl, our_ssl_sessionid); |
| if(ret) { |
| failf(data, "ssl_get_session returned -0x%x", -ret); |
| return CURLE_SSL_CONNECT_ERROR; |
| } |
| |
| /* If there's already a matching session in the cache, delete it */ |
| Curl_ssl_sessionid_lock(conn); |
| if(!Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL, sockindex)) |
| Curl_ssl_delsessionid(conn, old_ssl_sessionid); |
| |
| retcode = Curl_ssl_addsessionid(conn, our_ssl_sessionid, 0, sockindex); |
| Curl_ssl_sessionid_unlock(conn); |
| if(retcode) { |
| free(our_ssl_sessionid); |
| failf(data, "failed to store ssl session"); |
| return retcode; |
| } |
| } |
| |
| connssl->connecting_state = ssl_connect_done; |
| |
| return CURLE_OK; |
| } |
| |
| static ssize_t polarssl_send(struct connectdata *conn, |
| int sockindex, |
| const void *mem, |
| size_t len, |
| CURLcode *curlcode) |
| { |
| int ret = -1; |
| |
| ret = ssl_write(&conn->ssl[sockindex].ssl, |
| (unsigned char *)mem, len); |
| |
| if(ret < 0) { |
| *curlcode = (ret == POLARSSL_ERR_NET_WANT_WRITE) ? |
| CURLE_AGAIN : CURLE_SEND_ERROR; |
| ret = -1; |
| } |
| |
| return ret; |
| } |
| |
| void Curl_polarssl_close(struct connectdata *conn, int sockindex) |
| { |
| rsa_free(&conn->ssl[sockindex].rsa); |
| x509_crt_free(&conn->ssl[sockindex].clicert); |
| x509_crt_free(&conn->ssl[sockindex].cacert); |
| x509_crl_free(&conn->ssl[sockindex].crl); |
| ssl_free(&conn->ssl[sockindex].ssl); |
| } |
| |
| static ssize_t polarssl_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 = ssl_read(&conn->ssl[num].ssl, (unsigned char *)buf, buffersize); |
| |
| if(ret <= 0) { |
| if(ret == POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY) |
| return 0; |
| |
| *curlcode = (ret == POLARSSL_ERR_NET_WANT_READ) ? |
| CURLE_AGAIN : CURLE_RECV_ERROR; |
| return -1; |
| } |
| |
| len = ret; |
| |
| return len; |
| } |
| |
| void Curl_polarssl_session_free(void *ptr) |
| { |
| ssl_session_free(ptr); |
| free(ptr); |
| } |
| |
| /* 1.3.10 was the first rebranded version. All new releases (in 1.3 branch and |
| higher) will be mbed TLS branded.. */ |
| |
| size_t Curl_polarssl_version(char *buffer, size_t size) |
| { |
| unsigned int version = version_get_number(); |
| return snprintf(buffer, size, "%s/%d.%d.%d", |
| version >= 0x01030A00?"mbedTLS":"PolarSSL", |
| version>>24, (version>>16)&0xff, (version>>8)&0xff); |
| } |
| |
| static CURLcode |
| polarssl_connect_common(struct connectdata *conn, |
| int sockindex, |
| bool nonblocking, |
| bool *done) |
| { |
| CURLcode result; |
| struct Curl_easy *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; |
| } |
| |
| result = polarssl_connect_step1(conn, sockindex); |
| if(result) |
| return result; |
| } |
| |
| 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_check(readfd, CURL_SOCKET_BAD, 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. |
| */ |
| result = polarssl_connect_step2(conn, sockindex); |
| if(result || (nonblocking && |
| (ssl_connect_2 == connssl->connecting_state || |
| ssl_connect_2_reading == connssl->connecting_state || |
| ssl_connect_2_writing == connssl->connecting_state))) |
| return result; |
| |
| } /* repeat step2 until all transactions are done. */ |
| |
| if(ssl_connect_3 == connssl->connecting_state) { |
| result = polarssl_connect_step3(conn, sockindex); |
| if(result) |
| return result; |
| } |
| |
| if(ssl_connect_done == connssl->connecting_state) { |
| connssl->state = ssl_connection_complete; |
| conn->recv[sockindex] = polarssl_recv; |
| conn->send[sockindex] = polarssl_send; |
| *done = TRUE; |
| } |
| else |
| *done = FALSE; |
| |
| /* Reset our connect state machine */ |
| connssl->connecting_state = ssl_connect_1; |
| |
| return CURLE_OK; |
| } |
| |
| CURLcode |
| Curl_polarssl_connect_nonblocking(struct connectdata *conn, |
| int sockindex, |
| bool *done) |
| { |
| return polarssl_connect_common(conn, sockindex, TRUE, done); |
| } |
| |
| |
| CURLcode |
| Curl_polarssl_connect(struct connectdata *conn, |
| int sockindex) |
| { |
| CURLcode result; |
| bool done = FALSE; |
| |
| result = polarssl_connect_common(conn, sockindex, FALSE, &done); |
| if(result) |
| return result; |
| |
| DEBUGASSERT(done); |
| |
| return CURLE_OK; |
| } |
| |
| /* |
| * return 0 error initializing SSL |
| * return 1 SSL initialized successfully |
| */ |
| int Curl_polarssl_init(void) |
| { |
| return Curl_polarsslthreadlock_thread_setup(); |
| } |
| |
| void Curl_polarssl_cleanup(void) |
| { |
| (void)Curl_polarsslthreadlock_thread_cleanup(); |
| } |
| |
| |
| int Curl_polarssl_data_pending(const struct connectdata *conn, int sockindex) |
| { |
| return ssl_get_bytes_avail(&conn->ssl[sockindex].ssl) != 0; |
| } |
| |
| #endif /* USE_POLARSSL */ |