diff options
Diffstat (limited to 'Utilities/cmcurl/lib/vtls/mbedtls.c')
| -rw-r--r-- | Utilities/cmcurl/lib/vtls/mbedtls.c | 250 |
1 files changed, 188 insertions, 62 deletions
diff --git a/Utilities/cmcurl/lib/vtls/mbedtls.c b/Utilities/cmcurl/lib/vtls/mbedtls.c index 24249dd..3ffa957 100644 --- a/Utilities/cmcurl/lib/vtls/mbedtls.c +++ b/Utilities/cmcurl/lib/vtls/mbedtls.c @@ -6,7 +6,7 @@ * \___|\___/|_| \_\_____| * * Copyright (C) 2010 - 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com> - * Copyright (C) 2012 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al. + * Copyright (C) 2012 - 2017, 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 @@ -31,11 +31,15 @@ #ifdef USE_MBEDTLS +#include <mbedtls/version.h> +#if MBEDTLS_VERSION_NUMBER >= 0x02040000 #include <mbedtls/net_sockets.h> +#else +#include <mbedtls/net.h> +#endif #include <mbedtls/ssl.h> #include <mbedtls/certs.h> #include <mbedtls/x509.h> -#include <mbedtls/version.h> #include <mbedtls/error.h> #include <mbedtls/entropy.h> @@ -153,19 +157,91 @@ const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_fr = static Curl_recv mbed_recv; static Curl_send mbed_send; +static CURLcode mbedtls_version_from_curl(int *mbedver, long version) +{ + switch(version) { + case CURL_SSLVERSION_TLSv1_0: + *mbedver = MBEDTLS_SSL_MINOR_VERSION_1; + return CURLE_OK; + case CURL_SSLVERSION_TLSv1_1: + *mbedver = MBEDTLS_SSL_MINOR_VERSION_2; + return CURLE_OK; + case CURL_SSLVERSION_TLSv1_2: + *mbedver = MBEDTLS_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]; + int mbedtls_ver_min = MBEDTLS_SSL_MINOR_VERSION_1; + int mbedtls_ver_max = MBEDTLS_SSL_MINOR_VERSION_1; + long ssl_version = SSL_CONN_CONFIG(version); + long ssl_version_max = SSL_CONN_CONFIG(version_max); + 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 = mbedtls_version_from_curl(&mbedtls_ver_min, ssl_version); + if(result) { + failf(data, "unsupported min version passed via CURLOPT_SSLVERSION"); + return result; + } + result = mbedtls_version_from_curl(&mbedtls_ver_max, ssl_version_max >> 16); + if(result) { + failf(data, "unsupported max version passed via CURLOPT_SSLVERSION"); + return result; + } + + mbedtls_ssl_conf_min_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3, + mbedtls_ver_min); + mbedtls_ssl_conf_max_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3, + mbedtls_ver_max); + + return result; +} + static CURLcode mbed_connect_step1(struct connectdata *conn, int sockindex) { struct Curl_easy *data = conn->data; struct ssl_connect_data* connssl = &conn->ssl[sockindex]; - + const char * const ssl_cafile = SSL_CONN_CONFIG(CAfile); + const bool verifypeer = SSL_CONN_CONFIG(verifypeer); + const char * const ssl_capath = SSL_CONN_CONFIG(CApath); + char * const ssl_cert = SSL_SET_OPTION(cert); + const char * const ssl_crlfile = SSL_SET_OPTION(CRLfile); + 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; /* mbedTLS only supports SSLv3 and TLSv1 */ - if(data->set.ssl.version == CURL_SSLVERSION_SSLv2) { + if(SSL_CONN_CONFIG(version) == CURL_SSLVERSION_SSLv2) { failf(data, "mbedTLS does not support SSLv2"); return CURLE_SSL_CONNECT_ERROR; } @@ -201,34 +277,32 @@ mbed_connect_step1(struct connectdata *conn, /* Load the trusted CA */ mbedtls_x509_crt_init(&connssl->cacert); - if(data->set.str[STRING_SSL_CAFILE]) { - ret = mbedtls_x509_crt_parse_file(&connssl->cacert, - data->set.str[STRING_SSL_CAFILE]); + if(ssl_cafile) { + ret = mbedtls_x509_crt_parse_file(&connssl->cacert, 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); + ssl_cafile, -ret, errorbuf); - if(data->set.ssl.verifypeer) + if(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(ssl_capath) { + ret = mbedtls_x509_crt_parse_path(&connssl->cacert, 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); + ssl_capath, -ret, errorbuf); - if(data->set.ssl.verifypeer) + if(verifypeer) return CURLE_SSL_CACERT_BADFILE; } } @@ -236,16 +310,15 @@ mbed_connect_step1(struct connectdata *conn, /* Load the client certificate */ mbedtls_x509_crt_init(&connssl->clicert); - if(data->set.str[STRING_CERT]) { - ret = mbedtls_x509_crt_parse_file(&connssl->clicert, - data->set.str[STRING_CERT]); + if(ssl_cert) { + ret = mbedtls_x509_crt_parse_file(&connssl->clicert, ssl_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); + ssl_cert, -ret, errorbuf); return CURLE_SSL_CERTPROBLEM; } @@ -254,9 +327,9 @@ mbed_connect_step1(struct connectdata *conn, /* Load the client private key */ mbedtls_pk_init(&connssl->pk); - if(data->set.str[STRING_KEY]) { - ret = mbedtls_pk_parse_keyfile(&connssl->pk, data->set.str[STRING_KEY], - data->set.str[STRING_KEY_PASSWD]); + if(SSL_SET_OPTION(key)) { + ret = mbedtls_pk_parse_keyfile(&connssl->pk, SSL_SET_OPTION(key), + SSL_SET_OPTION(key_passwd)); if(ret == 0 && !mbedtls_pk_can_do(&connssl->pk, MBEDTLS_PK_RSA)) ret = MBEDTLS_ERR_PK_TYPE_MISMATCH; @@ -265,7 +338,7 @@ mbed_connect_step1(struct connectdata *conn, 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); + SSL_SET_OPTION(key), -ret, errorbuf); return CURLE_SSL_CERTPROBLEM; } @@ -274,23 +347,21 @@ mbed_connect_step1(struct connectdata *conn, /* Load the CRL */ mbedtls_x509_crl_init(&connssl->crl); - if(data->set.str[STRING_SSL_CRLFILE]) { - ret = mbedtls_x509_crl_parse_file(&connssl->crl, - data->set.str[STRING_SSL_CRLFILE]); + if(ssl_crlfile) { + ret = mbedtls_x509_crl_parse_file(&connssl->crl, 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); + ssl_crlfile, -ret, errorbuf); return CURLE_SSL_CRL_BADFILE; } } - infof(data, "mbedTLS: Connecting to %s:%d\n", - conn->host.name, conn->remote_port); + infof(data, "mbedTLS: Connecting to %s:%d\n", hostname, port); mbedtls_ssl_config_init(&connssl->config); @@ -312,7 +383,7 @@ mbed_connect_step1(struct connectdata *conn, mbedtls_ssl_conf_cert_profile(&connssl->config, &mbedtls_x509_crt_profile_fr); - switch(data->set.ssl.version) { + switch(SSL_CONN_CONFIG(version)) { case CURL_SSLVERSION_DEFAULT: case CURL_SSLVERSION_TLSv1: mbedtls_ssl_conf_min_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3, @@ -327,28 +398,17 @@ mbed_connect_step1(struct connectdata *conn, infof(data, "mbedTLS: Set SSL version to 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); - mbedtls_ssl_conf_max_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3, - MBEDTLS_SSL_MINOR_VERSION_1); - infof(data, "mbedTLS: Set SSL version to 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); - mbedtls_ssl_conf_max_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3, - MBEDTLS_SSL_MINOR_VERSION_2); - infof(data, "mbedTLS: Set SSL version to 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); - mbedtls_ssl_conf_max_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3, - MBEDTLS_SSL_MINOR_VERSION_3); - infof(data, "mbedTLS: Set SSL version to TLS 1.2\n"); - break; + case CURL_SSLVERSION_TLSv1_3: + { + CURLcode result = set_ssl_version_min_max(conn, sockindex); + if(result != CURLE_OK) + return result; + break; + } default: - failf(data, "mbedTLS: Unsupported SSL protocol version"); + failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION"); return CURLE_SSL_CONNECT_ERROR; } @@ -364,12 +424,17 @@ mbed_connect_step1(struct connectdata *conn, mbedtls_ssl_conf_ciphersuites(&connssl->config, mbedtls_ssl_list_ciphersuites()); +#if defined(MBEDTLS_SSL_SESSION_TICKETS) + mbedtls_ssl_conf_session_tickets(&connssl->config, + MBEDTLS_SSL_SESSION_TICKETS_DISABLED); +#endif + /* Check if there's a cached ID we can/should use here! */ - if(conn->ssl_config.sessionid) { + if(SSL_SET_OPTION(primary.sessionid)) { void *old_session = NULL; Curl_ssl_sessionid_lock(conn); - if(!Curl_ssl_getsessionid(conn, &old_session, NULL)) { + if(!Curl_ssl_getsessionid(conn, &old_session, NULL, sockindex)) { ret = mbedtls_ssl_set_session(&connssl->ssl, old_session); if(ret) { Curl_ssl_sessionid_unlock(conn); @@ -385,11 +450,11 @@ mbed_connect_step1(struct connectdata *conn, &connssl->cacert, &connssl->crl); - if(data->set.str[STRING_KEY]) { + if(SSL_SET_OPTION(key)) { mbedtls_ssl_conf_own_cert(&connssl->config, &connssl->clicert, &connssl->pk); } - if(mbedtls_ssl_set_hostname(&connssl->ssl, conn->host.name)) { + if(mbedtls_ssl_set_hostname(&connssl->ssl, hostname)) { /* mbedtls_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. */ @@ -430,6 +495,16 @@ mbed_connect_step1(struct connectdata *conn, mbedtls_debug_set_threshold(4); #endif + /* give application a chance to interfere with mbedTLS set up. */ + if(data->set.ssl.fsslctx) { + ret = (*data->set.ssl.fsslctx)(data, &connssl->config, + data->set.ssl.fsslctxp); + if(ret) { + failf(data, "error signaled by ssl ctx callback"); + return ret; + } + } + connssl->connecting_state = ssl_connect_2; return CURLE_OK; @@ -443,9 +518,12 @@ mbed_connect_step2(struct connectdata *conn, struct Curl_easy *data = conn->data; struct ssl_connect_data* connssl = &conn->ssl[sockindex]; const mbedtls_x509_crt *peercert; + const char * const pinnedpubkey = SSL_IS_PROXY() ? + data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY] : + data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG]; #ifdef HAS_ALPN - const char* next_protocol; + const char *next_protocol; #endif char errorbuf[128]; @@ -479,7 +557,7 @@ mbed_connect_step2(struct connectdata *conn, ret = mbedtls_ssl_get_verify_result(&conn->ssl[sockindex].ssl); - if(ret && data->set.ssl.verifypeer) { + if(ret && SSL_CONN_CONFIG(verifypeer)) { if(ret & MBEDTLS_X509_BADCERT_EXPIRED) failf(data, "Cert verify failed: BADCERT_EXPIRED"); @@ -514,7 +592,7 @@ mbed_connect_step2(struct connectdata *conn, free(buffer); } - if(data->set.str[STRING_SSL_PINNEDPUBLICKEY]) { + if(pinnedpubkey) { int size; CURLcode result; mbedtls_x509_crt *p; @@ -553,7 +631,7 @@ mbed_connect_step2(struct connectdata *conn, /* mbedtls_pk_write_pubkey_der writes data at the end of the buffer. */ result = Curl_pin_peer_pubkey(data, - data->set.str[STRING_SSL_PINNEDPUBLICKEY], + pinnedpubkey, &pubkey[PUB_DER_MAX_BYTES - size], size); if(result) { mbedtls_x509_crt_free(p); @@ -606,7 +684,7 @@ mbed_connect_step3(struct connectdata *conn, DEBUGASSERT(ssl_connect_3 == connssl->connecting_state); - if(conn->ssl_config.sessionid) { + if(SSL_SET_OPTION(primary.sessionid)) { int ret; mbedtls_ssl_session *our_ssl_sessionid; void *old_ssl_sessionid = NULL; @@ -619,16 +697,17 @@ mbed_connect_step3(struct connectdata *conn, ret = mbedtls_ssl_get_session(&connssl->ssl, our_ssl_sessionid); if(ret) { + free(our_ssl_sessionid); failf(data, "mbedtls_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)) + 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); + retcode = Curl_ssl_addsessionid(conn, our_ssl_sessionid, 0, sockindex); Curl_ssl_sessionid_unlock(conn); if(retcode) { free(our_ssl_sessionid); @@ -717,6 +796,55 @@ size_t Curl_mbedtls_version(char *buffer, size_t size) (version>>16)&0xff, (version>>8)&0xff); } +CURLcode Curl_mbedtls_random(struct Curl_easy *data, unsigned char *entropy, + size_t length) +{ +#if defined(MBEDTLS_CTR_DRBG_C) + int ret = -1; + char errorbuf[128]; + mbedtls_entropy_context ctr_entropy; + mbedtls_ctr_drbg_context ctr_drbg; + mbedtls_entropy_init(&ctr_entropy); + mbedtls_ctr_drbg_init(&ctr_drbg); + errorbuf[0]=0; + + ret = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, + &ctr_entropy, NULL, 0); + + if(ret) { +#ifdef MBEDTLS_ERROR_C + mbedtls_strerror(ret, errorbuf, sizeof(errorbuf)); +#endif /* MBEDTLS_ERROR_C */ + failf(data, "Failed - mbedTLS: ctr_drbg_seed returned (-0x%04X) %s\n", + -ret, errorbuf); + } + else { + ret = mbedtls_ctr_drbg_random(&ctr_drbg, entropy, length); + + if(ret) { +#ifdef MBEDTLS_ERROR_C + mbedtls_strerror(ret, errorbuf, sizeof(errorbuf)); +#endif /* MBEDTLS_ERROR_C */ + failf(data, "mbedTLS: ctr_drbg_init returned (-0x%04X) %s\n", + -ret, errorbuf); + } + } + + mbedtls_ctr_drbg_free(&ctr_drbg); + mbedtls_entropy_free(&ctr_entropy); + + return ret == 0 ? CURLE_OK : CURLE_FAILED_INIT; +#elif defined(MBEDTLS_HAVEGE_C) + mbedtls_havege_state hs; + mbedtls_havege_init(&hs); + mbedtls_havege_random(&hs, entropy, length); + mbedtls_havege_free(&hs); + return CURLE_OK; +#else + return CURLE_NOT_BUILT_IN; +#endif +} + static CURLcode mbed_connect_common(struct connectdata *conn, int sockindex, @@ -871,9 +999,7 @@ void Curl_mbedtls_cleanup(void) int Curl_mbedtls_data_pending(const struct connectdata *conn, int sockindex) { - mbedtls_ssl_context *ssl = - (mbedtls_ssl_context *)&conn->ssl[sockindex].ssl; - return ssl->in_msglen != 0; + return mbedtls_ssl_get_bytes_avail(&conn->ssl[sockindex].ssl) != 0; } #endif /* USE_MBEDTLS */ |