8cee03b118
The default setting of using the "highest" method available doesn't work with some servers like Microsoft Azure. TLSV1 seems to work with pretty much any server.
159 lines
6.7 KiB
C
159 lines
6.7 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2015 Daniel Campora
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdint.h>
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#include <std.h>
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#include "simplelink.h"
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#include "py/mpconfig.h"
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#include "py/obj.h"
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#include "py/objstr.h"
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#include "py/runtime.h"
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#include "modnetwork.h"
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#include "modusocket.h"
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#include "mpexception.h"
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/******************************************************************************
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DEFINE CONSTANTS
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******************************************************************************/
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#define SSL_CERT_NONE (0)
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#define SSL_CERT_OPTIONAL (1)
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#define SSL_CERT_REQUIRED (2)
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/******************************************************************************
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DEFINE TYPES
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******************************************************************************/
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typedef struct _mp_obj_ssl_socket_t {
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mp_obj_base_t base;
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mod_network_socket_base_t sock_base;
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mp_obj_t o_sock;
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} mp_obj_ssl_socket_t;
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/******************************************************************************
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DECLARE PRIVATE DATA
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******************************************************************************/
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STATIC const mp_obj_type_t ssl_socket_type;
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/******************************************************************************/
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// Micro Python bindings; SSL class
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// ssl sockets inherit from normal socket, so we take its
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// locals and stream methods
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STATIC const mp_obj_type_t ssl_socket_type = {
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{ &mp_type_type },
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.name = MP_QSTR_ussl,
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.getiter = NULL,
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.iternext = NULL,
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.stream_p = &socket_stream_p,
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.locals_dict = (mp_obj_t)&socket_locals_dict,
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};
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STATIC mp_obj_t mod_ssl_wrap_socket(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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STATIC const mp_arg_t allowed_args[] = {
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{ MP_QSTR_sock, MP_ARG_REQUIRED | MP_ARG_OBJ, },
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{ MP_QSTR_keyfile, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
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{ MP_QSTR_certfile, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
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{ MP_QSTR_server_side, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
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{ MP_QSTR_cert_reqs, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = SSL_CERT_NONE} },
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{ MP_QSTR_ca_certs, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
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};
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// parse arguments
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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// chech if ca validation is required
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if (args[4].u_int != SSL_CERT_NONE && args[5].u_obj == mp_const_none) {
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goto arg_error;
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}
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// retrieve the file paths (with an 6 byte offset in order to strip it from the '/flash' prefix)
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const char *keyfile = (args[1].u_obj == mp_const_none) ? NULL : &(mp_obj_str_get_str(args[1].u_obj)[6]);
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const char *certfile = (args[2].u_obj == mp_const_none) ? NULL : &(mp_obj_str_get_str(args[2].u_obj)[6]);
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const char *cafile = (args[5].u_obj == mp_const_none || args[4].u_int != SSL_CERT_REQUIRED) ?
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NULL : &(mp_obj_str_get_str(args[5].u_obj)[6]);
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// server side requires both certfile and keyfile
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if (args[3].u_bool && (!keyfile || !certfile)) {
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goto arg_error;
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}
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_i16 sd = ((mod_network_socket_obj_t *)args[0].u_obj)->sock_base.sd;
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_i16 _errno;
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_u8 method = SL_SO_SEC_METHOD_TLSV1;
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if ((_errno = sl_SetSockOpt(sd, SL_SOL_SOCKET, SL_SO_SECMETHOD, &method, sizeof(method))) < 0) {
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goto socket_error;
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}
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if (keyfile && (_errno = sl_SetSockOpt(sd, SL_SOL_SOCKET, SL_SO_SECURE_FILES_PRIVATE_KEY_FILE_NAME, keyfile, strlen(keyfile))) < 0) {
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goto socket_error;
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}
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if (certfile && (_errno = sl_SetSockOpt(sd, SL_SOL_SOCKET, SL_SO_SECURE_FILES_CERTIFICATE_FILE_NAME, certfile, strlen(certfile))) < 0) {
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goto socket_error;
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}
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if (cafile && (_errno = sl_SetSockOpt(sd, SL_SOL_SOCKET, SL_SO_SECURE_FILES_CA_FILE_NAME, cafile, strlen(cafile))) < 0) {
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goto socket_error;
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}
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// create the ssl socket
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mp_obj_ssl_socket_t *ssl_sock = m_new_obj(mp_obj_ssl_socket_t);
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// ssl sockets inherit all properties from the original socket
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memcpy (&ssl_sock->sock_base, &((mod_network_socket_obj_t *)args[0].u_obj)->sock_base, sizeof(mod_network_socket_base_t));
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ssl_sock->base.type = &ssl_socket_type;
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ssl_sock->sock_base.cert_req = (args[4].u_int == SSL_CERT_REQUIRED) ? true : false;
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ssl_sock->o_sock = args[0].u_obj;
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return ssl_sock;
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socket_error:
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nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
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arg_error:
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_KW(mod_ssl_wrap_socket_obj, 0, mod_ssl_wrap_socket);
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STATIC const mp_map_elem_t mp_module_ussl_globals_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_ussl) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_wrap_socket), (mp_obj_t)&mod_ssl_wrap_socket_obj },
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// class exceptions
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{ MP_OBJ_NEW_QSTR(MP_QSTR_SSLError), (mp_obj_t)&mp_type_OSError },
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// class constants
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{ MP_OBJ_NEW_QSTR(MP_QSTR_CERT_NONE), MP_OBJ_NEW_SMALL_INT(SSL_CERT_NONE) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_CERT_OPTIONAL), MP_OBJ_NEW_SMALL_INT(SSL_CERT_OPTIONAL) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_CERT_REQUIRED), MP_OBJ_NEW_SMALL_INT(SSL_CERT_REQUIRED) },
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};
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STATIC MP_DEFINE_CONST_DICT(mp_module_ussl_globals, mp_module_ussl_globals_table);
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const mp_obj_module_t mp_module_ussl = {
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.base = { &mp_type_module },
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.name = MP_QSTR_ussl,
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.globals = (mp_obj_dict_t*)&mp_module_ussl_globals,
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};
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