diff options
Diffstat (limited to 'lib/vtls/polarssl.c')
| -rw-r--r-- | lib/vtls/polarssl.c | 931 |
1 files changed, 0 insertions, 931 deletions
diff --git a/lib/vtls/polarssl.c b/lib/vtls/polarssl.c deleted file mode 100644 index 9e7dd9043..000000000 --- a/lib/vtls/polarssl.c +++ /dev/null @@ -1,931 +0,0 @@ -/*************************************************************************** - * _ _ ____ _ - * Project ___| | | | _ \| | - * / __| | | | |_) | | - * | (__| |_| | _ <| |___ - * \___|\___/|_| \_\_____| - * - * Copyright (C) 2012 - 2019, 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 "multiif.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) - -struct ssl_backend_data { - ctr_drbg_context ctr_drbg; - entropy_context entropy; - ssl_context ssl; - int server_fd; - x509_crt cacert; - x509_crt clicert; - x509_crl crl; - rsa_context rsa; -}; - -#define BACKEND connssl->backend - -/* 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; - break; - } - - switch(ssl_version_max) { - case CURL_SSLVERSION_MAX_NONE: - 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(&BACKEND->ssl, SSL_MAJOR_VERSION_3, ssl_min_ver); - ssl_set_max_version(&BACKEND->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(&BACKEND->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(&BACKEND->entropy); - - if((ret = ctr_drbg_init(&BACKEND->ctr_drbg, entropy_func, &BACKEND->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(&BACKEND->cacert, 0, sizeof(x509_crt)); - - if(SSL_CONN_CONFIG(CAfile)) { - ret = x509_crt_parse_file(&BACKEND->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(&BACKEND->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(&BACKEND->clicert, 0, sizeof(x509_crt)); - - if(SSL_SET_OPTION(cert)) { - ret = x509_crt_parse_file(&BACKEND->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(&BACKEND->rsa, pk_rsa(pk)); - else - rsa_free(&BACKEND->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(&BACKEND->crl, 0, sizeof(x509_crl)); - - if(SSL_SET_OPTION(CRLfile)) { - ret = x509_crl_parse_file(&BACKEND->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(&BACKEND->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(&BACKEND->ssl, SSL_MAJOR_VERSION_3, - SSL_MINOR_VERSION_1); - break; - case CURL_SSLVERSION_SSLv3: - ssl_set_min_version(&BACKEND->ssl, SSL_MAJOR_VERSION_3, - SSL_MINOR_VERSION_0); - ssl_set_max_version(&BACKEND->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(&BACKEND->ssl, SSL_IS_CLIENT); - ssl_set_authmode(&BACKEND->ssl, SSL_VERIFY_OPTIONAL); - - ssl_set_rng(&BACKEND->ssl, ctr_drbg_random, - &BACKEND->ctr_drbg); - ssl_set_bio(&BACKEND->ssl, - net_recv, &conn->sock[sockindex], - net_send, &conn->sock[sockindex]); - - ssl_set_ciphersuites(&BACKEND->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(&BACKEND->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(&BACKEND->ssl, - &BACKEND->cacert, - &BACKEND->crl, - hostname); - - ssl_set_own_cert_rsa(&BACKEND->ssl, - &BACKEND->clicert, &BACKEND->rsa); - - if(ssl_set_hostname(&BACKEND->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(&BACKEND->ssl, protocols); - } -#endif - -#ifdef POLARSSL_DEBUG - ssl_set_dbg(&BACKEND->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(&BACKEND->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(&BACKEND->ssl) ); - - ret = ssl_get_verify_result(&BACKEND->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_PEER_FAILED_VERIFICATION; - } - - 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(&(BACKEND->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(&(BACKEND->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(&BACKEND->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(&BACKEND->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"); - Curl_multiuse_state(conn, conn->negnpn == CURL_HTTP_VERSION_2 ? - BUNDLE_MULTIPLEX : BUNDLE_NO_MULTIUSE); - } -#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 = calloc(1, sizeof(ssl_session)); - if(!our_ssl_sessionid) - return CURLE_OUT_OF_MEMORY; - - ret = ssl_get_session(&BACKEND->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) -{ - struct ssl_connect_data *connssl = &conn->ssl[sockindex]; - int ret = -1; - - ret = ssl_write(&BACKEND->ssl, - (unsigned char *)mem, len); - - if(ret < 0) { - *curlcode = (ret == POLARSSL_ERR_NET_WANT_WRITE) ? - CURLE_AGAIN : CURLE_SEND_ERROR; - ret = -1; - } - - return ret; -} - -static void Curl_polarssl_close(struct connectdata *conn, int sockindex) -{ - struct ssl_connect_data *connssl = &conn->ssl[sockindex]; - rsa_free(&BACKEND->rsa); - x509_crt_free(&BACKEND->clicert); - x509_crt_free(&BACKEND->cacert); - x509_crl_free(&BACKEND->crl); - ssl_free(&BACKEND->ssl); -} - -static ssize_t polarssl_recv(struct connectdata *conn, - int num, - char *buf, - size_t buffersize, - CURLcode *curlcode) -{ - struct ssl_connect_data *connssl = &conn->ssl[num]; - int ret = -1; - ssize_t len = -1; - - memset(buf, 0, buffersize); - ret = ssl_read(&BACKEND->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; -} - -static 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.. */ - -static size_t Curl_polarssl_version(char *buffer, size_t size) -{ - unsigned int version = version_get_number(); - return msnprintf(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]; - timediff_t 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:(time_t)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; -} - -static CURLcode Curl_polarssl_connect_nonblocking(struct connectdata *conn, - int sockindex, bool *done) -{ - return polarssl_connect_common(conn, sockindex, TRUE, done); -} - - -static 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 - */ -static int Curl_polarssl_init(void) -{ - return Curl_polarsslthreadlock_thread_setup(); -} - -static void Curl_polarssl_cleanup(void) -{ - (void)Curl_polarsslthreadlock_thread_cleanup(); -} - -static bool Curl_polarssl_data_pending(const struct connectdata *conn, - int sockindex) -{ - const struct ssl_connect_data *connssl = &conn->ssl[sockindex]; - return ssl_get_bytes_avail(&BACKEND->ssl) != 0; -} - -static CURLcode Curl_polarssl_sha256sum(const unsigned char *input, - size_t inputlen, - unsigned char *sha256sum, - size_t sha256len UNUSED_PARAM) -{ - (void)sha256len; - sha256(input, inputlen, sha256sum, 0); - return CURLE_OK; -} - -static void *Curl_polarssl_get_internals(struct ssl_connect_data *connssl, - CURLINFO info UNUSED_PARAM) -{ - (void)info; - return &BACKEND->ssl; -} - -const struct Curl_ssl Curl_ssl_polarssl = { - { CURLSSLBACKEND_POLARSSL, "polarssl" }, /* info */ - - SSLSUPP_CA_PATH | - SSLSUPP_PINNEDPUBKEY, - - sizeof(struct ssl_backend_data), - - Curl_polarssl_init, /* init */ - Curl_polarssl_cleanup, /* cleanup */ - Curl_polarssl_version, /* version */ - Curl_none_check_cxn, /* check_cxn */ - Curl_none_shutdown, /* shutdown */ - Curl_polarssl_data_pending, /* data_pending */ - /* This might cause libcurl to use a weeker random! */ - Curl_none_random, /* random */ - Curl_none_cert_status_request, /* cert_status_request */ - Curl_polarssl_connect, /* connect */ - Curl_polarssl_connect_nonblocking, /* connect_nonblocking */ - Curl_polarssl_get_internals, /* get_internals */ - Curl_polarssl_close, /* close_one */ - Curl_none_close_all, /* close_all */ - Curl_polarssl_session_free, /* session_free */ - Curl_none_set_engine, /* set_engine */ - Curl_none_set_engine_default, /* set_engine_default */ - Curl_none_engines_list, /* engines_list */ - Curl_none_false_start, /* false_start */ - Curl_none_md5sum, /* md5sum */ - Curl_polarssl_sha256sum /* sha256sum */ -}; - -#endif /* USE_POLARSSL */ |