diff options
Diffstat (limited to 'libs/libcurl/src/vtls/openssl.c')
| -rw-r--r-- | libs/libcurl/src/vtls/openssl.c | 233 |
1 files changed, 174 insertions, 59 deletions
diff --git a/libs/libcurl/src/vtls/openssl.c b/libs/libcurl/src/vtls/openssl.c index fb9f27123e..385f281793 100644 --- a/libs/libcurl/src/vtls/openssl.c +++ b/libs/libcurl/src/vtls/openssl.c @@ -25,11 +25,6 @@ * but vtls.c should ever call or use these functions. */ -/* - * The original SSLeay-using code for curl was written by Linas Vepstas and - * Sampo Kellomaki 1998. - */ - #include "curl_setup.h" #ifdef USE_OPENSSL @@ -396,7 +391,11 @@ static const char *SSL_ERROR_to_str(int err) */ static char *ossl_strerror(unsigned long error, char *buf, size_t size) { +#ifdef OPENSSL_IS_BORINGSSL + ERR_error_string_n((uint32_t)error, buf, size); +#else ERR_error_string_n(error, buf, size); +#endif return buf; } @@ -1534,8 +1533,13 @@ static CURLcode verifyhost(struct connectdata *conn, X509 *server_cert) altnames = X509_get_ext_d2i(server_cert, NID_subject_alt_name, NULL, NULL); if(altnames) { +#ifdef OPENSSL_IS_BORINGSSL + size_t numalts; + size_t i; +#else int numalts; int i; +#endif bool dnsmatched = FALSE; bool ipmatched = FALSE; @@ -1565,11 +1569,10 @@ static CURLcode verifyhost(struct connectdata *conn, X509 *server_cert) assumed that the data returned by ASN1_STRING_data() is null terminated or does not contain embedded nulls." But also that "The actual format of the data will depend on the actual string - type itself: for example for and IA5String the data will be ASCII" + type itself: for example for an IA5String the data will be ASCII" - Gisle researched the OpenSSL sources: - "I checked the 0.9.6 and 0.9.8 sources before my patch and - it always 0-terminates an IA5String." + It has been however verified that in 0.9.6 and 0.9.7, IA5String + is always zero-terminated. */ if((altlen == strlen(altptr)) && /* if this isn't true, there was an embedded zero in the name @@ -1633,8 +1636,7 @@ static CURLcode verifyhost(struct connectdata *conn, X509 *server_cert) /* In OpenSSL 0.9.7d and earlier, ASN1_STRING_to_UTF8 fails if the input is already UTF-8 encoded. We check for this case and copy the raw string manually to avoid the problem. This code can be made - conditional in the future when OpenSSL has been fixed. Work-around - brought by Alexis S. L. Carvalho. */ + conditional in the future when OpenSSL has been fixed. */ if(tmp) { if(ASN1_STRING_type(tmp) == V_ASN1_UTF8STRING) { j = ASN1_STRING_length(tmp); @@ -2154,9 +2156,96 @@ get_ssl_version_txt(SSL *ssl) } #endif +#if (OPENSSL_VERSION_NUMBER >= 0x10100000L) /* 1.1.0 */ +static CURLcode +set_ssl_version_min_max(SSL_CTX *ctx, struct connectdata *conn) +{ + /* first, TLS min version... */ + long curl_ssl_version_min = SSL_CONN_CONFIG(version); + long curl_ssl_version_max; + + /* convert cURL min SSL version option to OpenSSL constant */ + long ossl_ssl_version_min = 0; + long ossl_ssl_version_max = 0; + switch(curl_ssl_version_min) { + case CURL_SSLVERSION_TLSv1: /* TLS 1.x */ + case CURL_SSLVERSION_TLSv1_0: + ossl_ssl_version_min = TLS1_VERSION; + break; + case CURL_SSLVERSION_TLSv1_1: + ossl_ssl_version_min = TLS1_1_VERSION; + break; + case CURL_SSLVERSION_TLSv1_2: + ossl_ssl_version_min = TLS1_2_VERSION; + break; +#ifdef TLS1_3_VERSION + case CURL_SSLVERSION_TLSv1_3: + ossl_ssl_version_min = TLS1_3_VERSION; + break; +#endif + } + + /* CURL_SSLVERSION_DEFAULT means that no option was selected. + We don't want to pass 0 to SSL_CTX_set_min_proto_version as + it would enable all versions down to the lowest supported by + the library. + So we skip this, and stay with the OS default + */ + if(curl_ssl_version_min != CURL_SSLVERSION_DEFAULT) { + if(!SSL_CTX_set_min_proto_version(ctx, ossl_ssl_version_min)) { + return CURLE_SSL_CONNECT_ERROR; + } + } + + /* ... then, TLS max version */ + curl_ssl_version_max = SSL_CONN_CONFIG(version_max); + + /* convert cURL max SSL version option to OpenSSL constant */ + ossl_ssl_version_max = 0; + switch(curl_ssl_version_max) { + case CURL_SSLVERSION_MAX_TLSv1_0: + ossl_ssl_version_max = TLS1_VERSION; + break; + case CURL_SSLVERSION_MAX_TLSv1_1: + ossl_ssl_version_max = TLS1_1_VERSION; + break; + case CURL_SSLVERSION_MAX_TLSv1_2: + ossl_ssl_version_max = TLS1_2_VERSION; + break; +#ifdef TLS1_3_VERSION + case CURL_SSLVERSION_MAX_TLSv1_3: + ossl_ssl_version_max = TLS1_3_VERSION; + break; +#endif + case CURL_SSLVERSION_MAX_NONE: /* none selected */ + case CURL_SSLVERSION_MAX_DEFAULT: /* max selected */ + default: + /* SSL_CTX_set_max_proto_version states that: + setting the maximum to 0 will enable + protocol versions up to the highest version + supported by the library */ + ossl_ssl_version_max = 0; + break; + } + + if(!SSL_CTX_set_max_proto_version(ctx, ossl_ssl_version_max)) { + return CURLE_SSL_CONNECT_ERROR; + } + + return CURLE_OK; +} +#endif + +#ifdef OPENSSL_IS_BORINGSSL +typedef uint32_t ctx_option_t; +#else +typedef long ctx_option_t; +#endif + +#if (OPENSSL_VERSION_NUMBER < 0x10100000L) /* 1.1.0 */ static CURLcode -set_ssl_version_min_max(long *ctx_options, struct connectdata *conn, - int sockindex) +set_ssl_version_min_max_legacy(ctx_option_t *ctx_options, + struct connectdata *conn, int sockindex) { #if (OPENSSL_VERSION_NUMBER < 0x1000100FL) || !defined(TLS1_3_VERSION) /* convoluted #if condition just to avoid compiler warnings on unused @@ -2228,6 +2317,7 @@ set_ssl_version_min_max(long *ctx_options, struct connectdata *conn, } return CURLE_OK; } +#endif /* The "new session" callback must return zero if the session can be removed * or non-zero if the session has been put into the session cache. @@ -2294,7 +2384,8 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex) X509_LOOKUP *lookup = NULL; curl_socket_t sockfd = conn->sock[sockindex]; struct ssl_connect_data *connssl = &conn->ssl[sockindex]; - long ctx_options = 0; + ctx_option_t ctx_options = 0; + #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME bool sni; const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name : @@ -2457,48 +2548,66 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex) #endif switch(ssl_version) { - case CURL_SSLVERSION_SSLv3: - ctx_options |= SSL_OP_NO_SSLv2; - ctx_options |= SSL_OP_NO_TLSv1; -#if OPENSSL_VERSION_NUMBER >= 0x1000100FL - ctx_options |= SSL_OP_NO_TLSv1_1; - ctx_options |= SSL_OP_NO_TLSv1_2; -#ifdef TLS1_3_VERSION - ctx_options |= SSL_OP_NO_TLSv1_3; -#endif + /* "--sslv2" option means SSLv2 only, disable all others */ + case CURL_SSLVERSION_SSLv2: +#if OPENSSL_VERSION_NUMBER >= 0x10100000L /* 1.1.0 */ + SSL_CTX_set_min_proto_version(BACKEND->ctx, SSL2_VERSION); + SSL_CTX_set_max_proto_version(BACKEND->ctx, SSL2_VERSION); +#else + ctx_options |= SSL_OP_NO_SSLv3; + ctx_options |= SSL_OP_NO_TLSv1; +# if OPENSSL_VERSION_NUMBER >= 0x1000100FL + ctx_options |= SSL_OP_NO_TLSv1_1; + ctx_options |= SSL_OP_NO_TLSv1_2; +# ifdef TLS1_3_VERSION + ctx_options |= SSL_OP_NO_TLSv1_3; +# endif +# endif #endif - break; - - case CURL_SSLVERSION_DEFAULT: - case CURL_SSLVERSION_TLSv1: - case CURL_SSLVERSION_TLSv1_0: - case CURL_SSLVERSION_TLSv1_1: - case CURL_SSLVERSION_TLSv1_2: - case CURL_SSLVERSION_TLSv1_3: - /* asking for any TLS version as the minimum, means no SSL versions - allowed */ - ctx_options |= SSL_OP_NO_SSLv2; - ctx_options |= SSL_OP_NO_SSLv3; - result = set_ssl_version_min_max(&ctx_options, conn, sockindex); - if(result != CURLE_OK) - return result; - break; + break; - case CURL_SSLVERSION_SSLv2: - ctx_options |= SSL_OP_NO_SSLv3; - ctx_options |= SSL_OP_NO_TLSv1; -#if OPENSSL_VERSION_NUMBER >= 0x1000100FL - ctx_options |= SSL_OP_NO_TLSv1_1; - ctx_options |= SSL_OP_NO_TLSv1_2; -#ifdef TLS1_3_VERSION - ctx_options |= SSL_OP_NO_TLSv1_3; + /* "--sslv3" option means SSLv3 only, disable all others */ + case CURL_SSLVERSION_SSLv3: +#if OPENSSL_VERSION_NUMBER >= 0x10100000L /* 1.1.0 */ + SSL_CTX_set_min_proto_version(BACKEND->ctx, SSL3_VERSION); + SSL_CTX_set_max_proto_version(BACKEND->ctx, SSL3_VERSION); +#else + ctx_options |= SSL_OP_NO_SSLv2; + ctx_options |= SSL_OP_NO_TLSv1; +# if OPENSSL_VERSION_NUMBER >= 0x1000100FL + ctx_options |= SSL_OP_NO_TLSv1_1; + ctx_options |= SSL_OP_NO_TLSv1_2; +# ifdef TLS1_3_VERSION + ctx_options |= SSL_OP_NO_TLSv1_3; +# endif +# endif #endif + break; + + /* "--tlsv<x.y>" options mean TLS >= version <x.y> */ + case CURL_SSLVERSION_DEFAULT: + case CURL_SSLVERSION_TLSv1: /* TLS >= version 1.0 */ + case CURL_SSLVERSION_TLSv1_0: /* TLS >= version 1.0 */ + case CURL_SSLVERSION_TLSv1_1: /* TLS >= version 1.1 */ + case CURL_SSLVERSION_TLSv1_2: /* TLS >= version 1.2 */ + case CURL_SSLVERSION_TLSv1_3: /* TLS >= version 1.3 */ + /* asking for any TLS version as the minimum, means no SSL versions + allowed */ + ctx_options |= SSL_OP_NO_SSLv2; + ctx_options |= SSL_OP_NO_SSLv3; + +#if (OPENSSL_VERSION_NUMBER >= 0x10100000L) /* 1.1.0 */ + result = set_ssl_version_min_max(BACKEND->ctx, conn); +#else + result = set_ssl_version_min_max_legacy(&ctx_options, conn, sockindex); #endif - break; + if(result != CURLE_OK) + return result; + break; - default: - failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION"); - return CURLE_SSL_CONNECT_ERROR; + default: + failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION"); + return CURLE_SSL_CONNECT_ERROR; } SSL_CTX_set_options(BACKEND->ctx, ctx_options); @@ -2654,11 +2763,11 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex) } /* Try building a chain using issuers in the trusted store first to avoid - problems with server-sent legacy intermediates. - Newer versions of OpenSSL do alternate chain checking by default which - gives us the same fix without as much of a performance hit (slight), so we - prefer that if available. - https://rt.openssl.org/Ticket/Display.html?id=3621&user=guest&pass=guest + problems with server-sent legacy intermediates. Newer versions of + OpenSSL do alternate chain checking by default which gives us the same + fix without as much of a performance hit (slight), so we prefer that if + available. + https://rt.openssl.org/Ticket/Display.html?id=3621&user=guest&pass=guest */ #if defined(X509_V_FLAG_TRUSTED_FIRST) && !defined(X509_V_FLAG_NO_ALT_CHAINS) if(verifypeer) { @@ -3038,6 +3147,12 @@ static int X509V3_ext(struct Curl_easy *data, return 0; /* all is fine */ } +#ifdef OPENSSL_IS_BORINGSSL +typedef size_t numcert_t; +#else +typedef int numcert_t; +#endif + static CURLcode get_cert_chain(struct connectdata *conn, struct ssl_connect_data *connssl) @@ -3046,7 +3161,7 @@ static CURLcode get_cert_chain(struct connectdata *conn, STACK_OF(X509) *sk; int i; struct Curl_easy *data = conn->data; - int numcerts; + numcert_t numcerts; BIO *mem; sk = SSL_get_peer_cert_chain(BACKEND->handle); @@ -3056,14 +3171,14 @@ static CURLcode get_cert_chain(struct connectdata *conn, numcerts = sk_X509_num(sk); - result = Curl_ssl_init_certinfo(data, numcerts); + result = Curl_ssl_init_certinfo(data, (int)numcerts); if(result) { return result; } mem = BIO_new(BIO_s_mem()); - for(i = 0; i < numcerts; i++) { + for(i = 0; i < (int)numcerts; i++) { ASN1_INTEGER *num; X509 *x = sk_X509_value(sk, i); EVP_PKEY *pubkey = NULL; |