0be6d925dc
Which means that reduz' beloved style which we all became used to will now be changed automatically to remove the first empty line. This makes us lean closer to 1TBS (the one true brace style) instead of hybridating it with some Allman-inspired spacing. There's still the case of braces around single-statement blocks that needs to be addressed (but clang-format can't help with that, but clang-tidy may if we agree about it). Part of #33027.
208 lines
7 KiB
C++
208 lines
7 KiB
C++
/*************************************************************************/
|
|
/* ssl_context_mbedtls.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
|
|
#include "ssl_context_mbedtls.h"
|
|
|
|
static void my_debug(void *ctx, int level,
|
|
const char *file, int line,
|
|
const char *str) {
|
|
printf("%s:%04d: %s", file, line, str);
|
|
fflush(stdout);
|
|
}
|
|
|
|
void SSLContextMbedTLS::print_mbedtls_error(int p_ret) {
|
|
printf("mbedtls error: returned -0x%x\n\n", -p_ret);
|
|
fflush(stdout);
|
|
}
|
|
|
|
/// CookieContextMbedTLS
|
|
|
|
Error CookieContextMbedTLS::setup() {
|
|
ERR_FAIL_COND_V_MSG(inited, ERR_ALREADY_IN_USE, "This cookie context is already in use");
|
|
|
|
mbedtls_ctr_drbg_init(&ctr_drbg);
|
|
mbedtls_entropy_init(&entropy);
|
|
mbedtls_ssl_cookie_init(&cookie_ctx);
|
|
inited = true;
|
|
|
|
int ret = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, &entropy, nullptr, 0);
|
|
if (ret != 0) {
|
|
clear(); // Never leave unusable resources around.
|
|
ERR_FAIL_V_MSG(FAILED, "mbedtls_ctr_drbg_seed returned an error " + itos(ret));
|
|
}
|
|
|
|
ret = mbedtls_ssl_cookie_setup(&cookie_ctx, mbedtls_ctr_drbg_random, &ctr_drbg);
|
|
if (ret != 0) {
|
|
clear();
|
|
ERR_FAIL_V_MSG(FAILED, "mbedtls_ssl_cookie_setup returned an error " + itos(ret));
|
|
}
|
|
return OK;
|
|
}
|
|
|
|
void CookieContextMbedTLS::clear() {
|
|
if (!inited)
|
|
return;
|
|
mbedtls_ctr_drbg_free(&ctr_drbg);
|
|
mbedtls_entropy_free(&entropy);
|
|
mbedtls_ssl_cookie_free(&cookie_ctx);
|
|
}
|
|
|
|
CookieContextMbedTLS::CookieContextMbedTLS() {
|
|
inited = false;
|
|
}
|
|
|
|
CookieContextMbedTLS::~CookieContextMbedTLS() {
|
|
clear();
|
|
}
|
|
|
|
/// SSLContextMbedTLS
|
|
|
|
Error SSLContextMbedTLS::_setup(int p_endpoint, int p_transport, int p_authmode) {
|
|
ERR_FAIL_COND_V_MSG(inited, ERR_ALREADY_IN_USE, "This SSL context is already active");
|
|
|
|
mbedtls_ssl_init(&ssl);
|
|
mbedtls_ssl_config_init(&conf);
|
|
mbedtls_ctr_drbg_init(&ctr_drbg);
|
|
mbedtls_entropy_init(&entropy);
|
|
inited = true;
|
|
|
|
int ret = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, &entropy, nullptr, 0);
|
|
if (ret != 0) {
|
|
clear(); // Never leave unusable resources around.
|
|
ERR_FAIL_V_MSG(FAILED, "mbedtls_ctr_drbg_seed returned an error " + itos(ret));
|
|
}
|
|
|
|
ret = mbedtls_ssl_config_defaults(&conf, p_endpoint, p_transport, MBEDTLS_SSL_PRESET_DEFAULT);
|
|
if (ret != 0) {
|
|
clear();
|
|
ERR_FAIL_V_MSG(FAILED, "mbedtls_ssl_config_defaults returned an error" + itos(ret));
|
|
}
|
|
mbedtls_ssl_conf_authmode(&conf, p_authmode);
|
|
mbedtls_ssl_conf_rng(&conf, mbedtls_ctr_drbg_random, &ctr_drbg);
|
|
mbedtls_ssl_conf_dbg(&conf, my_debug, stdout);
|
|
return OK;
|
|
}
|
|
|
|
Error SSLContextMbedTLS::init_server(int p_transport, int p_authmode, Ref<CryptoKeyMbedTLS> p_pkey, Ref<X509CertificateMbedTLS> p_cert, Ref<CookieContextMbedTLS> p_cookies) {
|
|
ERR_FAIL_COND_V(!p_pkey.is_valid(), ERR_INVALID_PARAMETER);
|
|
ERR_FAIL_COND_V(!p_cert.is_valid(), ERR_INVALID_PARAMETER);
|
|
|
|
Error err = _setup(MBEDTLS_SSL_IS_SERVER, p_transport, p_authmode);
|
|
ERR_FAIL_COND_V(err != OK, err);
|
|
|
|
// Locking key and certificate(s)
|
|
pkey = p_pkey;
|
|
certs = p_cert;
|
|
if (pkey.is_valid())
|
|
pkey->lock();
|
|
if (certs.is_valid())
|
|
certs->lock();
|
|
|
|
// Adding key and certificate
|
|
int ret = mbedtls_ssl_conf_own_cert(&conf, &(certs->cert), &(pkey->pkey));
|
|
if (ret != 0) {
|
|
clear();
|
|
ERR_FAIL_V_MSG(ERR_INVALID_PARAMETER, "Invalid cert/key combination " + itos(ret));
|
|
}
|
|
// Adding CA chain if available.
|
|
if (certs->cert.next) {
|
|
mbedtls_ssl_conf_ca_chain(&conf, certs->cert.next, nullptr);
|
|
}
|
|
// DTLS Cookies
|
|
if (p_transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
|
|
if (p_cookies.is_null() || !p_cookies->inited) {
|
|
clear();
|
|
ERR_FAIL_V(ERR_BUG);
|
|
}
|
|
cookies = p_cookies;
|
|
mbedtls_ssl_conf_dtls_cookies(&conf, mbedtls_ssl_cookie_write, mbedtls_ssl_cookie_check, &(cookies->cookie_ctx));
|
|
}
|
|
mbedtls_ssl_setup(&ssl, &conf);
|
|
return OK;
|
|
}
|
|
|
|
Error SSLContextMbedTLS::init_client(int p_transport, int p_authmode, Ref<X509CertificateMbedTLS> p_valid_cas) {
|
|
Error err = _setup(MBEDTLS_SSL_IS_CLIENT, p_transport, p_authmode);
|
|
ERR_FAIL_COND_V(err != OK, err);
|
|
|
|
X509CertificateMbedTLS *cas = nullptr;
|
|
|
|
if (p_valid_cas.is_valid()) {
|
|
// Locking CA certificates
|
|
certs = p_valid_cas;
|
|
certs->lock();
|
|
cas = certs.ptr();
|
|
} else {
|
|
// Fall back to default certificates (no need to lock those).
|
|
cas = CryptoMbedTLS::get_default_certificates();
|
|
if (cas == nullptr) {
|
|
clear();
|
|
ERR_FAIL_V_MSG(ERR_UNCONFIGURED, "SSL module failed to initialize!");
|
|
}
|
|
}
|
|
|
|
// Set valid CAs
|
|
mbedtls_ssl_conf_ca_chain(&conf, &(cas->cert), nullptr);
|
|
mbedtls_ssl_setup(&ssl, &conf);
|
|
return OK;
|
|
}
|
|
|
|
void SSLContextMbedTLS::clear() {
|
|
if (!inited)
|
|
return;
|
|
mbedtls_ssl_free(&ssl);
|
|
mbedtls_ssl_config_free(&conf);
|
|
mbedtls_ctr_drbg_free(&ctr_drbg);
|
|
mbedtls_entropy_free(&entropy);
|
|
|
|
// Unlock and key and certificates
|
|
if (certs.is_valid())
|
|
certs->unlock();
|
|
certs = Ref<X509Certificate>();
|
|
if (pkey.is_valid())
|
|
pkey->unlock();
|
|
pkey = Ref<CryptoKeyMbedTLS>();
|
|
cookies = Ref<CookieContextMbedTLS>();
|
|
inited = false;
|
|
}
|
|
|
|
mbedtls_ssl_context *SSLContextMbedTLS::get_context() {
|
|
ERR_FAIL_COND_V(!inited, nullptr);
|
|
return &ssl;
|
|
}
|
|
|
|
SSLContextMbedTLS::SSLContextMbedTLS() {
|
|
inited = false;
|
|
}
|
|
|
|
SSLContextMbedTLS::~SSLContextMbedTLS() {
|
|
clear();
|
|
}
|