From 04780a4c63eb438432e6c20047a7ab4d3d5efb63 Mon Sep 17 00:00:00 2001 From: Christian Heimes Date: Tue, 19 Apr 2016 19:07:16 +0200 Subject: [PATCH] Port Python's SSL module to OpenSSL 1.1.0 (WIP) The patch makes Python compatible with OpenSSL 1.1.0-pre6-dev from git. The ssl and hashlib module are also compatible with OpenSSL 0.9.8zh, 1.0.1s, 1.0.2g as well as LibreSSL 2.3.3. --- Doc/library/ssl.rst | 54 ++++++++++++++- Lib/ssl.py | 16 +++-- Lib/test/test_ssl.py | 66 ++++++++++-------- Modules/_hashopenssl.c | 170 +++++++++++++++++++++++++++++----------------- Modules/_ssl.c | 178 +++++++++++++++++++++++++++++++++++++------------ 5 files changed, 349 insertions(+), 135 deletions(-) diff --git a/Doc/library/ssl.rst b/Doc/library/ssl.rst index 9d8d080cbc9d0c3bc5e5f24d9b042e6d4940b156..4f0a6689e7d81e6b6c9cc90bd93af10127cbffcb 100644 --- a/Doc/library/ssl.rst +++ b/Doc/library/ssl.rst @@ -52,6 +52,9 @@ For more sophisticated applications, the :class:`ssl.SSLContext` class helps manage settings and certificates, which can then be inherited by SSL sockets created through the :meth:`SSLContext.wrap_socket` method. +.. versionchanged:: 2.7.13 + OpenSSL 0.9.8 and 1.0.0 are deprecated and no longer supported. + Functions, Constants, and Exceptions ------------------------------------ @@ -322,6 +325,16 @@ purposes. Random generation ^^^^^^^^^^^^^^^^^ + .. deprecated:: + + 2.7.13 OpenSSL has deprecated :func:`ssl.RAND_pseudo_bytes`, use + :func:`ssl.RAND_bytes` instead. + + .. deprecated:: + + 2.7.13 OpenSSL has deprecated :func:`ssl.RAND_pseudo_bytes`, use + :func:`ssl.RAND_bytes` instead. + .. function:: RAND_status() Return ``True`` if the SSL pseudo-random number generator has been seeded @@ -340,7 +353,7 @@ Random generation See http://egd.sourceforge.net/ or http://prngd.sourceforge.net/ for sources of entropy-gathering daemons. - Availability: not available with LibreSSL. + Availability: not available with LibreSSL and OpenSSL > 1.1.0 .. function:: RAND_add(bytes, entropy) @@ -444,6 +457,9 @@ Certificate handling * :attr:`openssl_capath_env` - OpenSSL's environment key that points to a capath, * :attr:`openssl_capath` - hard coded path to a capath directory + Availability: LibreSSL ignores the environment vars + :attr:`openssl_cafile_env` and :attr:`openssl_capath_env` + .. versionadded:: 2.7.9 .. function:: enum_certificates(store_name) @@ -561,11 +577,19 @@ Constants .. versionadded:: 2.7.10 -.. data:: PROTOCOL_SSLv23 +.. data:: PROTOCOL_TLS Selects the highest protocol version that both the client and server support. Despite the name, this option can select "TLS" protocols as well as "SSL". + .. versionadded:: 2.7.13 + +.. data:: PROTOCOL_SSLv23 + + Alias for ``PROTOCOL_TLS``. + + .. deprecated:: 2.7.13 Use ``PROTOCOL_TLS`` instead. + .. data:: PROTOCOL_SSLv2 Selects SSL version 2 as the channel encryption protocol. @@ -577,6 +601,8 @@ Constants SSL version 2 is insecure. Its use is highly discouraged. + .. deprecated:: 2.7.13 OpenSSL has removed support for SSLv2. + .. data:: PROTOCOL_SSLv3 Selects SSL version 3 as the channel encryption protocol. @@ -588,10 +614,20 @@ Constants SSL version 3 is insecure. Its use is highly discouraged. + .. deprecated:: 2.7.13 + + OpenSSL has deprecated all version specific protocols. Use the default + protocol with flags like ``OP_NO_SSLv3`` instead. + .. data:: PROTOCOL_TLSv1 Selects TLS version 1.0 as the channel encryption protocol. + .. deprecated:: 2.7.13 + + OpenSSL has deprecated all version specific protocols. Use the default + protocol with flags like ``OP_NO_SSLv3`` instead. + .. data:: PROTOCOL_TLSv1_1 Selects TLS version 1.1 as the channel encryption protocol. @@ -599,6 +635,11 @@ Constants .. versionadded:: 2.7.9 + .. deprecated:: 2.7.13 + + OpenSSL has deprecated all version specific protocols. Use the default + protocol with flags like ``OP_NO_SSLv3`` instead. + .. data:: PROTOCOL_TLSv1_2 Selects TLS version 1.2 as the channel encryption protocol. This is the @@ -607,6 +648,12 @@ Constants .. versionadded:: 2.7.9 + .. deprecated:: 2.7.13 + + OpenSSL has deprecated all version specific protocols. Use the default + protocol with flags like ``OP_NO_SSLv3`` instead. + + .. data:: OP_ALL Enables workarounds for various bugs present in other SSL implementations. @@ -1112,6 +1159,9 @@ to speed up repeated connections from the same clients. This method will raise :exc:`NotImplementedError` if :data:`HAS_ALPN` is False. + OpenSSL 1.1.0+ will abort the handshake and raise :exc:`SSLError` when + both sides support ALPN but cannot agree on a protocol. + .. versionadded:: 2.7.10 .. method:: SSLContext.set_npn_protocols(protocols) diff --git a/Lib/ssl.py b/Lib/ssl.py index 60703808793345f08ad3f4b71b61a47bba837ce4..a07db250ef60f22f2292b3adc880627427b1e5f7 100644 --- a/Lib/ssl.py +++ b/Lib/ssl.py @@ -51,6 +51,7 @@ The following constants identify various SSL protocol variants: PROTOCOL_SSLv2 PROTOCOL_SSLv3 PROTOCOL_SSLv23 +PROTOCOL_TLS PROTOCOL_TLSv1 PROTOCOL_TLSv1_1 PROTOCOL_TLSv1_2 @@ -126,7 +127,10 @@ from _ssl import HAS_SNI, HAS_ECDH, HAS_NPN, HAS_ALPN from _ssl import _OPENSSL_API_VERSION -_PROTOCOL_NAMES = {value: name for name, value in globals().items() if name.startswith('PROTOCOL_')} +_PROTOCOL_NAMES = {value: name for name, value in globals().items() + if name.startswith('PROTOCOL_') + and name != 'PROTOCOL_SSLv23'} +PROTOCOL_SSLv23 = PROTOCOL_TLS try: _SSLv2_IF_EXISTS = PROTOCOL_SSLv2 @@ -408,7 +412,7 @@ def create_default_context(purpose=Purpose.SERVER_AUTH, cafile=None, if not isinstance(purpose, _ASN1Object): raise TypeError(purpose) - context = SSLContext(PROTOCOL_SSLv23) + context = SSLContext(PROTOCOL_TLS) # SSLv2 considered harmful. context.options |= OP_NO_SSLv2 @@ -445,7 +449,7 @@ def create_default_context(purpose=Purpose.SERVER_AUTH, cafile=None, context.load_default_certs(purpose) return context -def _create_unverified_context(protocol=PROTOCOL_SSLv23, cert_reqs=None, +def _create_unverified_context(protocol=PROTOCOL_TLS, cert_reqs=None, check_hostname=False, purpose=Purpose.SERVER_AUTH, certfile=None, keyfile=None, cafile=None, capath=None, cadata=None): @@ -518,7 +522,7 @@ class SSLSocket(socket): def __init__(self, sock=None, keyfile=None, certfile=None, server_side=False, cert_reqs=CERT_NONE, - ssl_version=PROTOCOL_SSLv23, ca_certs=None, + ssl_version=PROTOCOL_TLS, ca_certs=None, do_handshake_on_connect=True, family=AF_INET, type=SOCK_STREAM, proto=0, fileno=None, suppress_ragged_eofs=True, npn_protocols=None, ciphers=None, @@ -920,7 +924,7 @@ class SSLSocket(socket): def wrap_socket(sock, keyfile=None, certfile=None, server_side=False, cert_reqs=CERT_NONE, - ssl_version=PROTOCOL_SSLv23, ca_certs=None, + ssl_version=PROTOCOL_TLS, ca_certs=None, do_handshake_on_connect=True, suppress_ragged_eofs=True, ciphers=None): @@ -989,7 +993,7 @@ def PEM_cert_to_DER_cert(pem_cert_string): d = pem_cert_string.strip()[len(PEM_HEADER):-len(PEM_FOOTER)] return base64.decodestring(d.encode('ASCII', 'strict')) -def get_server_certificate(addr, ssl_version=PROTOCOL_SSLv23, ca_certs=None): +def get_server_certificate(addr, ssl_version=PROTOCOL_TLS, ca_certs=None): """Retrieve the certificate from the server at the specified address, and return it as a PEM-encoded string. If 'ca_certs' is specified, validate the server cert against it. diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py index 29922e7a0cac93b871bb92fd3121b314320cf973..f1d85dd0963a253288eb4e8dd49d168d2b33e639 100644 --- a/Lib/test/test_ssl.py +++ b/Lib/test/test_ssl.py @@ -26,6 +26,9 @@ ssl = support.import_module("ssl") PROTOCOLS = sorted(ssl._PROTOCOL_NAMES) HOST = support.HOST +IS_LIBRESSL = ssl.OPENSSL_VERSION.startswith('LibreSSL') +IS_OPENSSL_1_1 = not IS_LIBRESSL and ssl.OPENSSL_VERSION_INFO >= (1, 1, 0) + def data_file(*name): return os.path.join(os.path.dirname(__file__), *name) @@ -164,7 +167,6 @@ class BasicSocketTests(unittest.TestCase): self.assertIn(ssl.HAS_SNI, {True, False}) self.assertIn(ssl.HAS_ECDH, {True, False}) - def test_random(self): v = ssl.RAND_status() if support.verbose: @@ -281,9 +283,9 @@ class BasicSocketTests(unittest.TestCase): self.assertGreaterEqual(status, 0) self.assertLessEqual(status, 15) # Version string as returned by {Open,Libre}SSL, the format might change - if "LibreSSL" in s: - self.assertTrue(s.startswith("LibreSSL {:d}.{:d}".format(major, minor)), - (s, t)) + if IS_LIBRESSL: + self.assertTrue(s.startswith("LibreSSL {:d}".format(major)), + (s, t, hex(n))) else: self.assertTrue(s.startswith("OpenSSL {:d}.{:d}.{:d}".format(major, minor, fix)), (s, t)) @@ -742,15 +744,15 @@ class ContextTests(unittest.TestCase): def test_options(self): ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) # OP_ALL | OP_NO_SSLv2 | OP_NO_SSLv3 is the default value - self.assertEqual(ssl.OP_ALL | ssl.OP_NO_SSLv2 | ssl.OP_NO_SSLv3, - ctx.options) + default = (ssl.OP_ALL | ssl.OP_NO_SSLv2 | ssl.OP_NO_SSLv3) + if not IS_LIBRESSL and ssl.OPENSSL_VERSION_INFO >= (1, 1, 0): + default |= ssl.OP_NO_COMPRESSION + self.assertEqual(default, ctx.options) ctx.options |= ssl.OP_NO_TLSv1 - self.assertEqual(ssl.OP_ALL | ssl.OP_NO_SSLv2 | ssl.OP_NO_SSLv3 | ssl.OP_NO_TLSv1, - ctx.options) + self.assertEqual(default | ssl.OP_NO_TLSv1, ctx.options) if can_clear_options(): - ctx.options = (ctx.options & ~ssl.OP_NO_SSLv2) | ssl.OP_NO_TLSv1 - self.assertEqual(ssl.OP_ALL | ssl.OP_NO_TLSv1 | ssl.OP_NO_SSLv3, - ctx.options) + ctx.options = (ctx.options & ~ssl.OP_NO_TLSv1) + self.assertEqual(default, ctx.options) ctx.options = 0 self.assertEqual(0, ctx.options) else: @@ -1088,6 +1090,7 @@ class ContextTests(unittest.TestCase): self.assertRaises(TypeError, ctx.load_default_certs, 'SERVER_AUTH') @unittest.skipIf(sys.platform == "win32", "not-Windows specific") + @unittest.skipIf(IS_LIBRESSL, "LibreSSL doesn't support env vars") def test_load_default_certs_env(self): ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) with support.EnvironmentVarGuard() as env: @@ -1534,7 +1537,6 @@ class NetworkedTests(unittest.TestCase): sys.stdout.write("%s\n" % x) else: self.fail("Got server certificate %s for %s:%s!" % (pem, host, port)) - pem = ssl.get_server_certificate((host, port), ca_certs=cert) if not pem: @@ -2783,7 +2785,7 @@ else: with closing(context.wrap_socket(socket.socket())) as s: self.assertIs(s.version(), None) s.connect((HOST, server.port)) - self.assertEqual(s.version(), "TLSv1") + self.assertEqual(s.version(), 'TLSv1') self.assertIs(s.version(), None) @unittest.skipUnless(ssl.HAS_ECDH, "test requires ECDH-enabled OpenSSL") @@ -2925,24 +2927,36 @@ else: (['http/3.0', 'http/4.0'], None) ] for client_protocols, expected in protocol_tests: - server_context = ssl.SSLContext(ssl.PROTOCOL_TLSv1) + server_context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2) server_context.load_cert_chain(CERTFILE) server_context.set_alpn_protocols(server_protocols) - client_context = ssl.SSLContext(ssl.PROTOCOL_TLSv1) + client_context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2) client_context.load_cert_chain(CERTFILE) client_context.set_alpn_protocols(client_protocols) - stats = server_params_test(client_context, server_context, - chatty=True, connectionchatty=True) - msg = "failed trying %s (s) and %s (c).\n" \ - "was expecting %s, but got %%s from the %%s" \ - % (str(server_protocols), str(client_protocols), - str(expected)) - client_result = stats['client_alpn_protocol'] - self.assertEqual(client_result, expected, msg % (client_result, "client")) - server_result = stats['server_alpn_protocols'][-1] \ - if len(stats['server_alpn_protocols']) else 'nothing' - self.assertEqual(server_result, expected, msg % (server_result, "server")) + try: + stats = server_params_test(client_context, + server_context, + chatty=True, + connectionchatty=True) + except ssl.SSLError as e: + stats = e + + if expected is None and IS_OPENSSL_1_1: + # OpenSSL 1.1.0 raises handshake error + self.assertIsInstance(stats, ssl.SSLError) + else: + msg = "failed trying %s (s) and %s (c).\n" \ + "was expecting %s, but got %%s from the %%s" \ + % (str(server_protocols), str(client_protocols), + str(expected)) + client_result = stats['client_alpn_protocol'] + self.assertEqual(client_result, expected, + msg % (client_result, "client")) + server_result = stats['server_alpn_protocols'][-1] \ + if len(stats['server_alpn_protocols']) else 'nothing' + self.assertEqual(server_result, expected, + msg % (server_result, "server")) def test_selected_npn_protocol(self): # selected_npn_protocol() is None unless NPN is used diff --git a/Modules/_hashopenssl.c b/Modules/_hashopenssl.c index ad336c76c154117292e8ce8beb4758ea6e5389f1..443a486a4572687070beb0b8612f98eb37a1e0e6 100644 --- a/Modules/_hashopenssl.c +++ b/Modules/_hashopenssl.c @@ -37,8 +37,10 @@ /* EVP is the preferred interface to hashing in OpenSSL */ #include -#include #include +/* We use the object interface to discover what hashes OpenSSL supports. */ +#include +#include "openssl/err.h" #define MUNCH_SIZE INT_MAX @@ -50,15 +52,26 @@ #define HASH_OBJ_CONSTRUCTOR 0 #endif -/* Minimum OpenSSL version needed to support sha224 and higher. */ #if defined(OPENSSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER >= 0x00908000) #define _OPENSSL_SUPPORTS_SHA2 #endif +#if (OPENSSL_VERSION_NUMBER < 0x10100000L) || defined(LIBRESSL_VERSION_NUMBER) +/* OpenSSL < 1.1.0 */ +#define EVP_MD_CTX_new EVP_MD_CTX_create +#define EVP_MD_CTX_free EVP_MD_CTX_destroy +#define HAS_FAST_PKCS5_PBKDF2_HMAC 0 +#include +#else +/* OpenSSL >= 1.1.0 */ +#define HAS_FAST_PKCS5_PBKDF2_HMAC 1 +#endif + + typedef struct { PyObject_HEAD PyObject *name; /* name of this hash algorithm */ - EVP_MD_CTX ctx; /* OpenSSL message digest context */ + EVP_MD_CTX *ctx; /* OpenSSL message digest context */ #ifdef WITH_THREAD PyThread_type_lock lock; /* OpenSSL context lock */ #endif @@ -70,7 +83,6 @@ static PyTypeObject EVPtype; #define DEFINE_CONSTS_FOR_NEW(Name) \ static PyObject *CONST_ ## Name ## _name_obj = NULL; \ - static EVP_MD_CTX CONST_new_ ## Name ## _ctx; \ static EVP_MD_CTX *CONST_new_ ## Name ## _ctx_p = NULL; DEFINE_CONSTS_FOR_NEW(md5) @@ -83,19 +95,56 @@ DEFINE_CONSTS_FOR_NEW(sha512) #endif +/* LCOV_EXCL_START */ +static PyObject * +_setException(PyObject *exc) +{ + unsigned long errcode; + const char *lib, *func, *reason; + + errcode = ERR_peek_last_error(); + if (!errcode) { + PyErr_SetString(exc, "unknown reasons"); + return NULL; + } + ERR_clear_error(); + + lib = ERR_lib_error_string(errcode); + func = ERR_func_error_string(errcode); + reason = ERR_reason_error_string(errcode); + + if (lib && func) { + PyErr_Format(exc, "[%s: %s] %s", lib, func, reason); + } + else if (lib) { + PyErr_Format(exc, "[%s] %s", lib, reason); + } + else { + PyErr_SetString(exc, reason); + } + return NULL; +} +/* LCOV_EXCL_STOP */ + static EVPobject * newEVPobject(PyObject *name) { EVPobject *retval = (EVPobject *)PyObject_New(EVPobject, &EVPtype); + if (retval == NULL) + return NULL; + + retval->ctx = EVP_MD_CTX_new(); + if (retval->ctx == NULL) { + PyErr_NoMemory(); + return NULL; + } /* save the name for .name to return */ - if (retval != NULL) { - Py_INCREF(name); - retval->name = name; + Py_INCREF(name); + retval->name = name; #ifdef WITH_THREAD - retval->lock = NULL; + retval->lock = NULL; #endif - } return retval; } @@ -111,7 +160,7 @@ EVP_hash(EVPobject *self, const void *vp, Py_ssize_t len) process = MUNCH_SIZE; else process = Py_SAFE_DOWNCAST(len, Py_ssize_t, unsigned int); - EVP_DigestUpdate(&self->ctx, (const void*)cp, process); + EVP_DigestUpdate(self->ctx, (const void*)cp, process); len -= process; cp += process; } @@ -126,16 +175,20 @@ EVP_dealloc(EVPobject *self) if (self->lock != NULL) PyThread_free_lock(self->lock); #endif - EVP_MD_CTX_cleanup(&self->ctx); + EVP_MD_CTX_free(self->ctx); Py_XDECREF(self->name); PyObject_Del(self); } -static void locked_EVP_MD_CTX_copy(EVP_MD_CTX *new_ctx_p, EVPobject *self) +static int +locked_EVP_MD_CTX_copy(EVP_MD_CTX *new_ctx_p, EVPobject *self) { + int result; ENTER_HASHLIB(self); - EVP_MD_CTX_copy(new_ctx_p, &self->ctx); + /* XXX no error reporting */ + result = EVP_MD_CTX_copy(new_ctx_p, self->ctx); LEAVE_HASHLIB(self); + return result; } /* External methods for a hash object */ @@ -151,7 +204,9 @@ EVP_copy(EVPobject *self, PyObject *unused) if ( (newobj = newEVPobject(self->name))==NULL) return NULL; - locked_EVP_MD_CTX_copy(&newobj->ctx, self); + if (!locked_EVP_MD_CTX_copy(newobj->ctx, self)) { + return _setException(PyExc_ValueError); + } return (PyObject *)newobj; } @@ -162,16 +217,24 @@ static PyObject * EVP_digest(EVPobject *self, PyObject *unused) { unsigned char digest[EVP_MAX_MD_SIZE]; - EVP_MD_CTX temp_ctx; + EVP_MD_CTX *temp_ctx; PyObject *retval; unsigned int digest_size; - locked_EVP_MD_CTX_copy(&temp_ctx, self); - digest_size = EVP_MD_CTX_size(&temp_ctx); - EVP_DigestFinal(&temp_ctx, digest, NULL); + temp_ctx = EVP_MD_CTX_new(); + if (temp_ctx == NULL) { + PyErr_NoMemory(); + return NULL; + } + + if (!locked_EVP_MD_CTX_copy(temp_ctx, self)) { + return _setException(PyExc_ValueError); + } + digest_size = EVP_MD_CTX_size(temp_ctx); + EVP_DigestFinal(temp_ctx, digest, NULL); retval = PyString_FromStringAndSize((const char *)digest, digest_size); - EVP_MD_CTX_cleanup(&temp_ctx); + EVP_MD_CTX_free(temp_ctx); return retval; } @@ -182,17 +245,25 @@ static PyObject * EVP_hexdigest(EVPobject *self, PyObject *unused) { unsigned char digest[EVP_MAX_MD_SIZE]; - EVP_MD_CTX temp_ctx; + EVP_MD_CTX *temp_ctx; PyObject *retval; char *hex_digest; unsigned int i, j, digest_size; + temp_ctx = EVP_MD_CTX_new(); + if (temp_ctx == NULL) { + PyErr_NoMemory(); + return NULL; + } + /* Get the raw (binary) digest value */ - locked_EVP_MD_CTX_copy(&temp_ctx, self); - digest_size = EVP_MD_CTX_size(&temp_ctx); - EVP_DigestFinal(&temp_ctx, digest, NULL); + if (!locked_EVP_MD_CTX_copy(temp_ctx, self)) { + return _setException(PyExc_ValueError); + } + digest_size = EVP_MD_CTX_size(temp_ctx); + EVP_DigestFinal(temp_ctx, digest, NULL); - EVP_MD_CTX_cleanup(&temp_ctx); + EVP_MD_CTX_free(temp_ctx); /* Create a new string */ /* NOTE: not thread safe! modifying an already created string object */ @@ -266,7 +337,7 @@ static PyObject * EVP_get_block_size(EVPobject *self, void *closure) { long block_size; - block_size = EVP_MD_CTX_block_size(&self->ctx); + block_size = EVP_MD_CTX_block_size(self->ctx); return PyLong_FromLong(block_size); } @@ -274,7 +345,7 @@ static PyObject * EVP_get_digest_size(EVPobject *self, void *closure) { long size; - size = EVP_MD_CTX_size(&self->ctx); + size = EVP_MD_CTX_size(self->ctx); return PyLong_FromLong(size); } @@ -338,7 +409,7 @@ EVP_tp_init(EVPobject *self, PyObject *args, PyObject *kwds) PyBuffer_Release(&view); return -1; } - EVP_DigestInit(&self->ctx, digest); + EVP_DigestInit(self->ctx, digest); self->name = name_obj; Py_INCREF(self->name); @@ -435,9 +506,9 @@ EVPnew(PyObject *name_obj, return NULL; if (initial_ctx) { - EVP_MD_CTX_copy(&self->ctx, initial_ctx); + EVP_MD_CTX_copy(self->ctx, initial_ctx); } else { - EVP_DigestInit(&self->ctx, digest); + EVP_DigestInit(self->ctx, digest); } if (cp && len) { @@ -499,6 +570,7 @@ EVP_new(PyObject *self, PyObject *args, PyObject *kwdict) #define PY_PBKDF2_HMAC 1 +#if !HAS_FAST_PKCS5_PBKDF2_HMAC /* Improved implementation of PKCS5_PBKDF2_HMAC() * * PKCS5_PBKDF2_HMAC_fast() hashes the password exactly one time instead of @@ -580,37 +652,8 @@ PKCS5_PBKDF2_HMAC_fast(const char *pass, int passlen, HMAC_CTX_cleanup(&hctx_tpl); return 1; } +#endif -/* LCOV_EXCL_START */ -static PyObject * -_setException(PyObject *exc) -{ - unsigned long errcode; - const char *lib, *func, *reason; - - errcode = ERR_peek_last_error(); - if (!errcode) { - PyErr_SetString(exc, "unknown reasons"); - return NULL; - } - ERR_clear_error(); - - lib = ERR_lib_error_string(errcode); - func = ERR_func_error_string(errcode); - reason = ERR_reason_error_string(errcode); - - if (lib && func) { - PyErr_Format(exc, "[%s: %s] %s", lib, func, reason); - } - else if (lib) { - PyErr_Format(exc, "[%s] %s", lib, reason); - } - else { - PyErr_SetString(exc, reason); - } - return NULL; -} -/* LCOV_EXCL_STOP */ PyDoc_STRVAR(pbkdf2_hmac__doc__, "pbkdf2_hmac(hash_name, password, salt, iterations, dklen=None) -> key\n\ @@ -692,10 +735,17 @@ pbkdf2_hmac(PyObject *self, PyObject *args, PyObject *kwdict) key = PyBytes_AS_STRING(key_obj); Py_BEGIN_ALLOW_THREADS +#if HAS_FAST_PKCS5_PBKDF2_HMAC + retval = PKCS5_PBKDF2_HMAC((char*)password.buf, (int)password.len, + (unsigned char *)salt.buf, (int)salt.len, + iterations, digest, dklen, + (unsigned char *)key); +#else retval = PKCS5_PBKDF2_HMAC_fast((char*)password.buf, (int)password.len, (unsigned char *)salt.buf, (int)salt.len, iterations, digest, dklen, (unsigned char *)key); +#endif Py_END_ALLOW_THREADS if (!retval) { @@ -807,7 +857,7 @@ generate_hash_name_list(void) if (CONST_ ## NAME ## _name_obj == NULL) { \ CONST_ ## NAME ## _name_obj = PyString_FromString(#NAME); \ if (EVP_get_digestbyname(#NAME)) { \ - CONST_new_ ## NAME ## _ctx_p = &CONST_new_ ## NAME ## _ctx; \ + CONST_new_ ## NAME ## _ctx_p = EVP_MD_CTX_new(); \ EVP_DigestInit(CONST_new_ ## NAME ## _ctx_p, EVP_get_digestbyname(#NAME)); \ } \ } \ diff --git a/Modules/_ssl.c b/Modules/_ssl.c index 4572751a851e8c7820bb5a528bb0bff9df7b2d96..539f5132fe5dd373eb12c03f5d14dae63f64e72a 100644 --- a/Modules/_ssl.c +++ b/Modules/_ssl.c @@ -52,6 +52,14 @@ #include #endif +/* Don't warn about deprecated functions */ +#ifdef __GNUC__ +#pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif +#ifdef __clang__ +#pragma clang diagnostic ignored "-Wdeprecated-declarations" +#endif + /* Include OpenSSL header files */ #include "openssl/rsa.h" #include "openssl/crypto.h" @@ -87,6 +95,10 @@ struct py_ssl_library_code { /* Include generated data (error codes) */ #include "_ssl_data.h" +#if (OPENSSL_VERSION_NUMBER >= 0x10100000L) && !defined(LIBRESSL_VERSION_NUMBER) +# define OPENSSL_VERSION_1_1 1 +#endif + /* Openssl comes with TLSv1.1 and TLSv1.2 between 1.0.0h and 1.0.1 http://www.openssl.org/news/changelog.html */ @@ -110,6 +122,76 @@ struct py_ssl_library_code { # define HAVE_ALPN #endif +#ifndef INVALID_SOCKET /* MS defines this */ +#define INVALID_SOCKET (-1) +#endif + +#ifdef OPENSSL_VERSION_1_1 +/* OpenSSL 1.1.0+ */ +#ifndef OPENSSL_NO_SSL2 +#define OPENSSL_NO_SSL2 +#endif +#else /* OpenSSL < 1.1.0 */ +#if defined(WITH_THREAD) +#define HAVE_OPENSSL_CRYPTO_LOCK +#endif + +#define TLS_method SSLv23_method + +static int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne) +{ + return ne->set; +} + +#ifndef OPENSSL_NO_COMP +static int COMP_get_type(const COMP_METHOD *meth) +{ + return meth->type; +} + +static const char *COMP_get_name(const COMP_METHOD *meth) +{ + return meth->name; +} +#endif + +static pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) +{ + return ctx->default_passwd_callback; +} + +static void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) +{ + return ctx->default_passwd_callback_userdata; +} + +static int X509_OBJECT_get_type(X509_OBJECT *x) +{ + return x->type; +} + +static X509 *X509_OBJECT_get0_X509(X509_OBJECT *x) +{ + return x->data.x509; +} + +static int BIO_up_ref(BIO *b) +{ + CRYPTO_add(&b->references, 1, CRYPTO_LOCK_BIO); + return 1; +} + +static STACK_OF(X509_OBJECT) *X509_STORE_get0_objects(X509_STORE *store) { + return store->objs; +} + +static X509_VERIFY_PARAM *X509_STORE_get0_param(X509_STORE *store) +{ + return store->param; +} +#endif /* OpenSSL < 1.1.0 or LibreSSL */ + + enum py_ssl_error { /* these mirror ssl.h */ PY_SSL_ERROR_NONE, @@ -140,7 +222,7 @@ enum py_ssl_cert_requirements { enum py_ssl_version { PY_SSL_VERSION_SSL2, PY_SSL_VERSION_SSL3=1, - PY_SSL_VERSION_SSL23, + PY_SSL_VERSION_TLS, #if HAVE_TLSv1_2 PY_SSL_VERSION_TLS1, PY_SSL_VERSION_TLS1_1, @@ -681,7 +763,7 @@ _create_tuple_for_X509_NAME (X509_NAME *xname) /* check to see if we've gotten to a new RDN */ if (rdn_level >= 0) { - if (rdn_level != entry->set) { + if (rdn_level != X509_NAME_ENTRY_set(entry)) { /* yes, new RDN */ /* add old RDN to DN */ rdnt = PyList_AsTuple(rdn); @@ -698,7 +780,7 @@ _create_tuple_for_X509_NAME (X509_NAME *xname) goto fail0; } } - rdn_level = entry->set; + rdn_level = X509_NAME_ENTRY_set(entry); /* now add this attribute to the current RDN */ name = X509_NAME_ENTRY_get_object(entry); @@ -801,18 +883,18 @@ _get_peer_alt_names (X509 *certificate) { goto fail; } - p = ext->value->data; + p = X509_EXTENSION_get_data(ext)->data; if (method->it) names = (GENERAL_NAMES*) (ASN1_item_d2i(NULL, &p, - ext->value->length, + X509_EXTENSION_get_data(ext)->length, ASN1_ITEM_ptr(method->it))); else names = (GENERAL_NAMES*) (method->d2i(NULL, &p, - ext->value->length)); + X509_EXTENSION_get_data(ext)->length)); for(j = 0; j < sk_GENERAL_NAME_num(names); j++) { /* get a rendering of each name in the set of names */ @@ -1021,13 +1103,11 @@ _get_crl_dp(X509 *certificate) { int i, j; PyObject *lst, *res = NULL; -#if OPENSSL_VERSION_NUMBER < 0x10001000L - dps = X509_get_ext_d2i(certificate, NID_crl_distribution_points, NULL, NULL); -#else +#if OPENSSL_VERSION_NUMBER >= 0x10001000L /* Calls x509v3_cache_extensions and sets up crldp */ X509_check_ca(certificate); - dps = certificate->crldp; #endif + dps = X509_get_ext_d2i(certificate, NID_crl_distribution_points, NULL, NULL); if (dps == NULL) return Py_None; @@ -1443,9 +1523,9 @@ static PyObject *PySSL_compression(PySSLSocket *self) { if (self->ssl == NULL) Py_RETURN_NONE; comp_method = SSL_get_current_compression(self->ssl); - if (comp_method == NULL || comp_method->type == NID_undef) + if (comp_method == NULL || COMP_get_type(comp_method) == NID_undef) Py_RETURN_NONE; - short_name = OBJ_nid2sn(comp_method->type); + short_name = COMP_get_name(comp_method); if (short_name == NULL) Py_RETURN_NONE; return PyBytes_FromString(short_name); @@ -1994,7 +2074,7 @@ context_new(PyTypeObject *type, PyObject *args, PyObject *kwds) { char *kwlist[] = {"protocol", NULL}; PySSLContext *self; - int proto_version = PY_SSL_VERSION_SSL23; + int proto_version = PY_SSL_VERSION_TLS; long options; SSL_CTX *ctx = NULL; @@ -2020,8 +2100,8 @@ context_new(PyTypeObject *type, PyObject *args, PyObject *kwds) else if (proto_version == PY_SSL_VERSION_SSL2) ctx = SSL_CTX_new(SSLv2_method()); #endif - else if (proto_version == PY_SSL_VERSION_SSL23) - ctx = SSL_CTX_new(SSLv23_method()); + else if (proto_version == PY_SSL_VERSION_TLS) + ctx = SSL_CTX_new(TLS_method()); else proto_version = -1; PySSL_END_ALLOW_THREADS @@ -2067,8 +2147,9 @@ context_new(PyTypeObject *type, PyObject *args, PyObject *kwds) #ifndef OPENSSL_NO_ECDH /* Allow automatic ECDH curve selection (on OpenSSL 1.0.2+), or use prime256v1 by default. This is Apache mod_ssl's initialization - policy, so we should be safe. */ -#if defined(SSL_CTX_set_ecdh_auto) + policy, so we should be safe. OpenSSL 1.1 has it enabled by default. + */ +#if defined(SSL_CTX_set_ecdh_auto) && !defined(OPENSSL_VERSION_1_1) SSL_CTX_set_ecdh_auto(self->ctx, 1); #else { @@ -2336,10 +2417,12 @@ static PyObject * get_verify_flags(PySSLContext *self, void *c) { X509_STORE *store; + X509_VERIFY_PARAM *param; unsigned long flags; store = SSL_CTX_get_cert_store(self->ctx); - flags = X509_VERIFY_PARAM_get_flags(store->param); + param = X509_STORE_get0_param(store); + flags = X509_VERIFY_PARAM_get_flags(param); return PyLong_FromUnsignedLong(flags); } @@ -2347,22 +2430,24 @@ static int set_verify_flags(PySSLContext *self, PyObject *arg, void *c) { X509_STORE *store; + X509_VERIFY_PARAM *param; unsigned long new_flags, flags, set, clear; if (!PyArg_Parse(arg, "k", &new_flags)) return -1; store = SSL_CTX_get_cert_store(self->ctx); - flags = X509_VERIFY_PARAM_get_flags(store->param); + param = X509_STORE_get0_param(store); + flags = X509_VERIFY_PARAM_get_flags(param); clear = flags & ~new_flags; set = ~flags & new_flags; if (clear) { - if (!X509_VERIFY_PARAM_clear_flags(store->param, clear)) { + if (!X509_VERIFY_PARAM_clear_flags(param, clear)) { _setSSLError(NULL, 0, __FILE__, __LINE__); return -1; } } if (set) { - if (!X509_VERIFY_PARAM_set_flags(store->param, set)) { + if (!X509_VERIFY_PARAM_set_flags(param, set)) { _setSSLError(NULL, 0, __FILE__, __LINE__); return -1; } @@ -2537,8 +2622,8 @@ load_cert_chain(PySSLContext *self, PyObject *args, PyObject *kwds) char *kwlist[] = {"certfile", "keyfile", "password", NULL}; PyObject *keyfile = NULL, *keyfile_bytes = NULL, *password = NULL; char *certfile_bytes = NULL; - pem_password_cb *orig_passwd_cb = self->ctx->default_passwd_callback; - void *orig_passwd_userdata = self->ctx->default_passwd_callback_userdata; + pem_password_cb *orig_passwd_cb = SSL_CTX_get_default_passwd_cb(self->ctx); + void *orig_passwd_userdata = SSL_CTX_get_default_passwd_cb_userdata(self->ctx); _PySSLPasswordInfo pw_info = { NULL, NULL, NULL, 0, 0 }; int r; @@ -2674,8 +2759,9 @@ _add_ca_certs(PySSLContext *self, void *data, Py_ssize_t len, cert = d2i_X509_bio(biobuf, NULL); } else { cert = PEM_read_bio_X509(biobuf, NULL, - self->ctx->default_passwd_callback, - self->ctx->default_passwd_callback_userdata); + SSL_CTX_get_default_passwd_cb(self->ctx), + SSL_CTX_get_default_passwd_cb_userdata(self->ctx) + ); } if (cert == NULL) { break; @@ -3160,25 +3246,24 @@ static PyObject * cert_store_stats(PySSLContext *self) { X509_STORE *store; + STACK_OF(X509_OBJECT) *objs; X509_OBJECT *obj; - int x509 = 0, crl = 0, pkey = 0, ca = 0, i; + int x509 = 0, crl = 0, ca = 0, i; store = SSL_CTX_get_cert_store(self->ctx); - for (i = 0; i < sk_X509_OBJECT_num(store->objs); i++) { - obj = sk_X509_OBJECT_value(store->objs, i); - switch (obj->type) { + objs = X509_STORE_get0_objects(store); + for (i = 0; i < sk_X509_OBJECT_num(objs); i++) { + obj = sk_X509_OBJECT_value(objs, i); + switch (X509_OBJECT_get_type(obj)) { case X509_LU_X509: x509++; - if (X509_check_ca(obj->data.x509)) { + if (X509_check_ca(X509_OBJECT_get0_X509(obj))) { ca++; } break; case X509_LU_CRL: crl++; break; - case X509_LU_PKEY: - pkey++; - break; default: /* Ignore X509_LU_FAIL, X509_LU_RETRY, X509_LU_PKEY. * As far as I can tell they are internal states and never @@ -3204,6 +3289,7 @@ get_ca_certs(PySSLContext *self, PyObject *args, PyObject *kwds) char *kwlist[] = {"binary_form", NULL}; X509_STORE *store; PyObject *ci = NULL, *rlist = NULL, *py_binary_mode = Py_False; + STACK_OF(X509_OBJECT) *objs; int i; int binary_mode = 0; @@ -3221,17 +3307,18 @@ get_ca_certs(PySSLContext *self, PyObject *args, PyObject *kwds) } store = SSL_CTX_get_cert_store(self->ctx); - for (i = 0; i < sk_X509_OBJECT_num(store->objs); i++) { + objs = X509_STORE_get0_objects(store); + for (i = 0; i < sk_X509_OBJECT_num(objs); i++) { X509_OBJECT *obj; X509 *cert; - obj = sk_X509_OBJECT_value(store->objs, i); - if (obj->type != X509_LU_X509) { + obj = sk_X509_OBJECT_value(objs, i); + if (X509_OBJECT_get_type(obj) != X509_LU_X509) { /* not a x509 cert */ continue; } /* CA for any purpose */ - cert = obj->data.x509; + cert = X509_OBJECT_get0_X509(obj); if (!X509_check_ca(cert)) { continue; } @@ -3842,10 +3929,12 @@ static PyMethodDef PySSL_methods[] = { }; -#ifdef WITH_THREAD +#ifdef HAVE_OPENSSL_CRYPTO_LOCK /* an implementation of OpenSSL threading operations in terms - of the Python C thread library */ + * of the Python C thread library + * Only used up to 1.0.2. OpenSSL 1.1.0+ has its own locking code. + */ static PyThread_type_lock *_ssl_locks = NULL; @@ -3926,7 +4015,7 @@ static int _setup_ssl_threads(void) { return 1; } -#endif /* def HAVE_THREAD */ +#endif /* HAVE_OPENSSL_CRYPTO_LOCK for WITH_THREAD && OpenSSL < 1.1.0 */ PyDoc_STRVAR(module_doc, "Implementation module for SSL socket operations. See the socket module\n\ @@ -3979,11 +4068,16 @@ init_ssl(void) SSL_load_error_strings(); SSL_library_init(); #ifdef WITH_THREAD +#ifdef HAVE_OPENSSL_CRYPTO_LOCK /* note that this will start threading if not already started */ if (!_setup_ssl_threads()) { return; } +#elif OPENSSL_VERSION_1_1 && defined(OPENSSL_THREADS) + /* OpenSSL 1.1.0 builtin thread support is enabled */ + _ssl_locks_count++; #endif +#endif /* WITH_THREAD */ OpenSSL_add_all_algorithms(); /* Add symbols to module dict */ @@ -4136,7 +4230,9 @@ init_ssl(void) PY_SSL_VERSION_SSL3); #endif PyModule_AddIntConstant(m, "PROTOCOL_SSLv23", - PY_SSL_VERSION_SSL23); + PY_SSL_VERSION_TLS); + PyModule_AddIntConstant(m, "PROTOCOL_TLS", + PY_SSL_VERSION_TLS); PyModule_AddIntConstant(m, "PROTOCOL_TLSv1", PY_SSL_VERSION_TLS1); #if HAVE_TLSv1_2 -- 2.7.4