165 lines
7.0 KiB
C
165 lines
7.0 KiB
C
/*
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* This file is part of the MicroPython 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 "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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// MicroPython 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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.protocol = &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(size_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_ssl_version, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = SL_SO_SEC_METHOD_TLSV1} },
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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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// check if ca validation is required
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if (args[4].u_int != SSL_CERT_NONE && args[6].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[6].u_obj == mp_const_none || args[4].u_int != SSL_CERT_REQUIRED) ?
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NULL : &(mp_obj_str_get_str(args[6].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 _errno;
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_i16 sd = ((mod_network_socket_obj_t *)args[0].u_obj)->sock_base.sd;
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// set the requested SSL method
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_u8 method = args[5].u_int;
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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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mp_raise_OSError(_errno);
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arg_error:
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mp_raise_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_rom_map_elem_t mp_module_ussl_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_ussl) },
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{ MP_ROM_QSTR(MP_QSTR_wrap_socket), MP_ROM_PTR(&mod_ssl_wrap_socket_obj) },
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// class exceptions
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{ MP_ROM_QSTR(MP_QSTR_SSLError), MP_ROM_PTR(&mp_type_OSError) },
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// class constants
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{ MP_ROM_QSTR(MP_QSTR_CERT_NONE), MP_ROM_INT(SSL_CERT_NONE) },
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{ MP_ROM_QSTR(MP_QSTR_CERT_OPTIONAL), MP_ROM_INT(SSL_CERT_OPTIONAL) },
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{ MP_ROM_QSTR(MP_QSTR_CERT_REQUIRED), MP_ROM_INT(SSL_CERT_REQUIRED) },
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{ MP_ROM_QSTR(MP_QSTR_PROTOCOL_SSLv3), MP_ROM_INT(SL_SO_SEC_METHOD_SSLV3) },
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{ MP_ROM_QSTR(MP_QSTR_PROTOCOL_TLSv1), MP_ROM_INT(SL_SO_SEC_METHOD_TLSV1) },
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{ MP_ROM_QSTR(MP_QSTR_PROTOCOL_TLSv1_1), MP_ROM_INT(SL_SO_SEC_METHOD_TLSV1_1) },
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{ MP_ROM_QSTR(MP_QSTR_PROTOCOL_TLSv1_2), MP_ROM_INT(SL_SO_SEC_METHOD_TLSV1_2) },
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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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.globals = (mp_obj_dict_t*)&mp_module_ussl_globals,
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};
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