New PacketPeerDTLS and DTLSServer classes.
Custom instance implementation via the mbedtls module.
This commit is contained in:
parent
d06af89874
commit
6fc50d785e
12 changed files with 849 additions and 3 deletions
54
core/io/dtls_server.cpp
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54
core/io/dtls_server.cpp
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@ -0,0 +1,54 @@
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/*************************************************************************/
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/* dtls_server.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in 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, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "dtls_server.h"
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#include "core/os/file_access.h"
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#include "core/project_settings.h"
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DTLSServer *(*DTLSServer::_create)() = NULL;
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bool DTLSServer::available = false;
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DTLSServer *DTLSServer::create() {
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return _create();
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}
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bool DTLSServer::is_available() {
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return available;
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}
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void DTLSServer::_bind_methods() {
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ClassDB::bind_method(D_METHOD("setup", "key", "certificate", "chain"), &DTLSServer::setup, DEFVAL(Ref<X509Certificate>()));
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ClassDB::bind_method(D_METHOD("take_connection", "udp_peer"), &DTLSServer::take_connection);
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}
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DTLSServer::DTLSServer() {
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}
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57
core/io/dtls_server.h
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57
core/io/dtls_server.h
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@ -0,0 +1,57 @@
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/*************************************************************************/
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/* dtls_server.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
|
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in 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, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef DTLS_SERVER_H
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#define DTLS_SERVER_H
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#include "core/io/net_socket.h"
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#include "core/io/packet_peer_dtls.h"
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class DTLSServer : public Reference {
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GDCLASS(DTLSServer, Reference);
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protected:
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static DTLSServer *(*_create)();
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static void _bind_methods();
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static bool available;
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public:
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static bool is_available();
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static DTLSServer *create();
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virtual Error setup(Ref<CryptoKey> p_key, Ref<X509Certificate> p_cert, Ref<X509Certificate> p_ca_chain = Ref<X509Certificate>()) = 0;
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virtual void stop() = 0;
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virtual Ref<PacketPeerDTLS> take_connection(Ref<PacketPeerUDP> p_peer) = 0;
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DTLSServer();
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};
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#endif // DTLS_SERVER_H
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62
core/io/packet_peer_dtls.cpp
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62
core/io/packet_peer_dtls.cpp
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@ -0,0 +1,62 @@
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/*************************************************************************/
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/* packet_peer_dtls.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
|
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in 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, */
|
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "packet_peer_dtls.h"
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#include "core/os/file_access.h"
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#include "core/project_settings.h"
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PacketPeerDTLS *(*PacketPeerDTLS::_create)() = NULL;
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bool PacketPeerDTLS::available = false;
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PacketPeerDTLS *PacketPeerDTLS::create() {
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return _create();
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}
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bool PacketPeerDTLS::is_available() {
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return available;
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}
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void PacketPeerDTLS::_bind_methods() {
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ClassDB::bind_method(D_METHOD("poll"), &PacketPeerDTLS::poll);
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ClassDB::bind_method(D_METHOD("connect_to_peer", "packet_peer", "validate_certs", "for_hostname", "valid_certificate"), &PacketPeerDTLS::connect_to_peer, DEFVAL(true), DEFVAL(String()), DEFVAL(Ref<X509Certificate>()));
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ClassDB::bind_method(D_METHOD("get_status"), &PacketPeerDTLS::get_status);
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ClassDB::bind_method(D_METHOD("disconnect_from_peer"), &PacketPeerDTLS::disconnect_from_peer);
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BIND_ENUM_CONSTANT(STATUS_DISCONNECTED);
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BIND_ENUM_CONSTANT(STATUS_HANDSHAKING);
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BIND_ENUM_CONSTANT(STATUS_CONNECTED);
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BIND_ENUM_CONSTANT(STATUS_ERROR);
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BIND_ENUM_CONSTANT(STATUS_ERROR_HOSTNAME_MISMATCH);
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}
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PacketPeerDTLS::PacketPeerDTLS() {
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}
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68
core/io/packet_peer_dtls.h
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68
core/io/packet_peer_dtls.h
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@ -0,0 +1,68 @@
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/*************************************************************************/
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/* packet_peer_dtls.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
|
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in 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, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef PACKET_PEER_DTLS_H
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#define PACKET_PEER_DTLS_H
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#include "core/crypto/crypto.h"
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#include "core/io/packet_peer_udp.h"
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class PacketPeerDTLS : public PacketPeer {
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GDCLASS(PacketPeerDTLS, PacketPeer);
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protected:
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static PacketPeerDTLS *(*_create)();
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static void _bind_methods();
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static bool available;
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public:
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enum Status {
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STATUS_DISCONNECTED,
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STATUS_HANDSHAKING,
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STATUS_CONNECTED,
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STATUS_ERROR,
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STATUS_ERROR_HOSTNAME_MISMATCH
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};
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virtual void poll() = 0;
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virtual Error connect_to_peer(Ref<PacketPeerUDP> p_base, bool p_validate_certs = true, const String &p_for_hostname = String(), Ref<X509Certificate> p_ca_certs = Ref<X509Certificate>()) = 0;
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virtual void disconnect_from_peer() = 0;
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virtual Status get_status() const = 0;
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static PacketPeerDTLS *create();
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static bool is_available();
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PacketPeerDTLS();
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};
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VARIANT_ENUM_CAST(PacketPeerDTLS::Status);
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#endif // PACKET_PEER_DTLS_H
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@ -40,12 +40,14 @@
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#include "core/func_ref.h"
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#include "core/input_map.h"
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#include "core/io/config_file.h"
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#include "core/io/dtls_server.h"
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#include "core/io/http_client.h"
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#include "core/io/image_loader.h"
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#include "core/io/marshalls.h"
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#include "core/io/multiplayer_api.h"
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#include "core/io/networked_multiplayer_peer.h"
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#include "core/io/packet_peer.h"
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#include "core/io/packet_peer_dtls.h"
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#include "core/io/packet_peer_udp.h"
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#include "core/io/pck_packer.h"
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#include "core/io/resource_format_binary.h"
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@ -157,6 +159,8 @@ void register_core_types() {
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ClassDB::register_class<TCP_Server>();
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ClassDB::register_class<PacketPeerUDP>();
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ClassDB::register_class<UDPServer>();
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ClassDB::register_custom_instance_class<PacketPeerDTLS>();
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ClassDB::register_custom_instance_class<DTLSServer>();
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// Crypto
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ClassDB::register_class<HashingContext>();
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78
modules/mbedtls/dtls_server_mbedtls.cpp
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78
modules/mbedtls/dtls_server_mbedtls.cpp
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/*************************************************************************/
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/* dtls_server_mbedtls.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
|
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/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
|
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/* a copy of this software and associated documentation files (the */
|
||||
/* "Software"), to deal in the Software without restriction, including */
|
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/* without limitation the rights to use, copy, modify, merge, publish, */
|
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/* distribute, sublicense, and/or sell copies of the Software, and to */
|
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
|
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/* included in 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, */
|
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "dtls_server_mbedtls.h"
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#include "packet_peer_mbed_dtls.h"
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Error DTLSServerMbedTLS::setup(Ref<CryptoKey> p_key, Ref<X509Certificate> p_cert, Ref<X509Certificate> p_ca_chain) {
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ERR_FAIL_COND_V(_cookies->setup() != OK, ERR_ALREADY_IN_USE);
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_key = p_key;
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_cert = p_cert;
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_ca_chain = p_ca_chain;
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return OK;
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}
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void DTLSServerMbedTLS::stop() {
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_cookies->clear();
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}
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Ref<PacketPeerDTLS> DTLSServerMbedTLS::take_connection(Ref<PacketPeerUDP> p_udp_peer) {
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Ref<PacketPeerMbedDTLS> out;
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out.instance();
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ERR_FAIL_COND_V(!out.is_valid(), out);
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ERR_FAIL_COND_V(!p_udp_peer.is_valid(), out);
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out->accept_peer(p_udp_peer, _key, _cert, _ca_chain, _cookies);
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return out;
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}
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DTLSServer *DTLSServerMbedTLS::_create_func() {
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return memnew(DTLSServerMbedTLS);
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}
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void DTLSServerMbedTLS::initialize() {
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_create = _create_func;
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available = true;
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}
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void DTLSServerMbedTLS::finalize() {
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_create = NULL;
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available = false;
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}
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DTLSServerMbedTLS::DTLSServerMbedTLS() {
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_cookies.instance();
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}
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DTLSServerMbedTLS::~DTLSServerMbedTLS() {
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stop();
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}
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58
modules/mbedtls/dtls_server_mbedtls.h
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58
modules/mbedtls/dtls_server_mbedtls.h
Normal file
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/*************************************************************************/
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/* dtls_server_mbedtls.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
|
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/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
|
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/* 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 */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef MBED_DTLS_SERVER_H
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#define MBED_DTLS_SERVER_H
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#include "core/io/dtls_server.h"
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#include "ssl_context_mbedtls.h"
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class DTLSServerMbedTLS : public DTLSServer {
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private:
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static DTLSServer *_create_func();
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Ref<CryptoKey> _key;
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Ref<X509Certificate> _cert;
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Ref<X509Certificate> _ca_chain;
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Ref<CookieContextMbedTLS> _cookies;
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public:
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static void initialize();
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static void finalize();
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virtual Error setup(Ref<CryptoKey> p_key, Ref<X509Certificate> p_cert, Ref<X509Certificate> p_ca_chain = Ref<X509Certificate>());
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virtual void stop();
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virtual Ref<PacketPeerDTLS> take_connection(Ref<PacketPeerUDP> p_peer);
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DTLSServerMbedTLS();
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~DTLSServerMbedTLS();
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};
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#endif // MBED_DTLS_SERVER_H
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297
modules/mbedtls/packet_peer_mbed_dtls.cpp
Executable file
297
modules/mbedtls/packet_peer_mbed_dtls.cpp
Executable file
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/*************************************************************************/
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/* packet_peer_mbed_dtls.cpp */
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/*************************************************************************/
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/* This file is part of: */
|
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/* GODOT ENGINE */
|
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/* https://godotengine.org */
|
||||
/*************************************************************************/
|
||||
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
|
||||
/* Copyright (c) 2014-2019 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 "packet_peer_mbed_dtls.h"
|
||||
#include "mbedtls/platform_util.h"
|
||||
|
||||
#include "core/io/stream_peer_ssl.h"
|
||||
#include "core/os/file_access.h"
|
||||
|
||||
int PacketPeerMbedDTLS::bio_send(void *ctx, const unsigned char *buf, size_t len) {
|
||||
|
||||
if (buf == NULL || len <= 0) return 0;
|
||||
|
||||
PacketPeerMbedDTLS *sp = (PacketPeerMbedDTLS *)ctx;
|
||||
|
||||
ERR_FAIL_COND_V(sp == NULL, 0);
|
||||
|
||||
Error err = sp->base->put_packet((const uint8_t *)buf, len);
|
||||
if (err == ERR_BUSY) {
|
||||
return MBEDTLS_ERR_SSL_WANT_WRITE;
|
||||
} else if (err != OK) {
|
||||
ERR_FAIL_V(MBEDTLS_ERR_SSL_INTERNAL_ERROR);
|
||||
}
|
||||
return len;
|
||||
}
|
||||
|
||||
int PacketPeerMbedDTLS::bio_recv(void *ctx, unsigned char *buf, size_t len) {
|
||||
|
||||
if (buf == NULL || len <= 0) return 0;
|
||||
|
||||
PacketPeerMbedDTLS *sp = (PacketPeerMbedDTLS *)ctx;
|
||||
|
||||
ERR_FAIL_COND_V(sp == NULL, 0);
|
||||
|
||||
int pc = sp->base->get_available_packet_count();
|
||||
if (pc == 0) {
|
||||
return MBEDTLS_ERR_SSL_WANT_READ;
|
||||
} else if (pc < 0) {
|
||||
ERR_FAIL_V(MBEDTLS_ERR_SSL_INTERNAL_ERROR);
|
||||
}
|
||||
|
||||
const uint8_t *buffer;
|
||||
int buffer_size = 0;
|
||||
Error err = sp->base->get_packet(&buffer, buffer_size);
|
||||
if (err != OK) {
|
||||
return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
|
||||
}
|
||||
copymem(buf, buffer, buffer_size);
|
||||
return buffer_size;
|
||||
}
|
||||
|
||||
void PacketPeerMbedDTLS::_cleanup() {
|
||||
|
||||
ssl_ctx->clear();
|
||||
base = Ref<PacketPeer>();
|
||||
status = STATUS_DISCONNECTED;
|
||||
}
|
||||
|
||||
int PacketPeerMbedDTLS::_set_cookie() {
|
||||
// Setup DTLS session cookie for this client
|
||||
uint8_t client_id[18];
|
||||
IP_Address addr = base->get_packet_address();
|
||||
uint16_t port = base->get_packet_port();
|
||||
copymem(client_id, addr.get_ipv6(), 16);
|
||||
copymem(&client_id[16], (uint8_t *)&port, 2);
|
||||
return mbedtls_ssl_set_client_transport_id(ssl_ctx->get_context(), client_id, 18);
|
||||
}
|
||||
|
||||
Error PacketPeerMbedDTLS::_do_handshake() {
|
||||
int ret = 0;
|
||||
while ((ret = mbedtls_ssl_handshake(ssl_ctx->get_context())) != 0) {
|
||||
if (ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE) {
|
||||
if (ret != MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED) {
|
||||
ERR_PRINT("TLS handshake error: " + itos(ret));
|
||||
SSLContextMbedTLS::print_mbedtls_error(ret);
|
||||
}
|
||||
_cleanup();
|
||||
status = STATUS_ERROR;
|
||||
return FAILED;
|
||||
}
|
||||
// Will retry via poll later
|
||||
return OK;
|
||||
}
|
||||
|
||||
status = STATUS_CONNECTED;
|
||||
return OK;
|
||||
}
|
||||
|
||||
Error PacketPeerMbedDTLS::connect_to_peer(Ref<PacketPeerUDP> p_base, bool p_validate_certs, const String &p_for_hostname, Ref<X509Certificate> p_ca_certs) {
|
||||
|
||||
ERR_FAIL_COND_V(!p_base.is_valid() || !p_base->is_connected_to_host(), ERR_INVALID_PARAMETER);
|
||||
|
||||
base = p_base;
|
||||
int ret = 0;
|
||||
int authmode = p_validate_certs ? MBEDTLS_SSL_VERIFY_REQUIRED : MBEDTLS_SSL_VERIFY_NONE;
|
||||
|
||||
Error err = ssl_ctx->init_client(MBEDTLS_SSL_TRANSPORT_DATAGRAM, authmode, p_ca_certs);
|
||||
ERR_FAIL_COND_V(err != OK, err);
|
||||
|
||||
mbedtls_ssl_set_hostname(ssl_ctx->get_context(), p_for_hostname.utf8().get_data());
|
||||
mbedtls_ssl_set_bio(ssl_ctx->get_context(), this, bio_send, bio_recv, NULL);
|
||||
mbedtls_ssl_set_timer_cb(ssl_ctx->get_context(), &timer, mbedtls_timing_set_delay, mbedtls_timing_get_delay);
|
||||
|
||||
status = STATUS_HANDSHAKING;
|
||||
|
||||
if ((ret = _do_handshake()) != OK) {
|
||||
status = STATUS_ERROR_HOSTNAME_MISMATCH;
|
||||
return FAILED;
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
Error PacketPeerMbedDTLS::accept_peer(Ref<PacketPeerUDP> p_base, Ref<CryptoKey> p_key, Ref<X509Certificate> p_cert, Ref<X509Certificate> p_ca_chain, Ref<CookieContextMbedTLS> p_cookies) {
|
||||
|
||||
Error err = ssl_ctx->init_server(MBEDTLS_SSL_TRANSPORT_DATAGRAM, MBEDTLS_SSL_VERIFY_NONE, p_key, p_cert, p_cookies);
|
||||
ERR_FAIL_COND_V(err != OK, err);
|
||||
|
||||
base = p_base;
|
||||
base->set_blocking_mode(false);
|
||||
|
||||
mbedtls_ssl_session_reset(ssl_ctx->get_context());
|
||||
|
||||
int ret = _set_cookie();
|
||||
if (ret != 0) {
|
||||
_cleanup();
|
||||
ERR_FAIL_V_MSG(FAILED, "Error setting DTLS client cookie");
|
||||
}
|
||||
|
||||
mbedtls_ssl_set_bio(ssl_ctx->get_context(), this, bio_send, bio_recv, NULL);
|
||||
mbedtls_ssl_set_timer_cb(ssl_ctx->get_context(), &timer, mbedtls_timing_set_delay, mbedtls_timing_get_delay);
|
||||
|
||||
status = STATUS_HANDSHAKING;
|
||||
|
||||
if ((ret = _do_handshake()) != OK) {
|
||||
status = STATUS_ERROR;
|
||||
return FAILED;
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
Error PacketPeerMbedDTLS::put_packet(const uint8_t *p_buffer, int p_bytes) {
|
||||
|
||||
ERR_FAIL_COND_V(status != STATUS_CONNECTED, ERR_UNCONFIGURED);
|
||||
|
||||
if (p_bytes == 0)
|
||||
return OK;
|
||||
|
||||
int ret = mbedtls_ssl_write(ssl_ctx->get_context(), p_buffer, p_bytes);
|
||||
if (ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE) {
|
||||
ret = 0; // non blocking io
|
||||
} else if (ret <= 0) {
|
||||
SSLContextMbedTLS::print_mbedtls_error(ret);
|
||||
_cleanup();
|
||||
return ERR_CONNECTION_ERROR;
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
Error PacketPeerMbedDTLS::get_packet(const uint8_t **r_buffer, int &r_bytes) {
|
||||
|
||||
ERR_FAIL_COND_V(status != STATUS_CONNECTED, ERR_UNCONFIGURED);
|
||||
|
||||
r_bytes = 0;
|
||||
|
||||
int ret = mbedtls_ssl_read(ssl_ctx->get_context(), packet_buffer, PACKET_BUFFER_SIZE);
|
||||
if (ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE) {
|
||||
ret = 0; // non blocking io
|
||||
} else if (ret <= 0) {
|
||||
if (ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY) {
|
||||
// Also send close notify back
|
||||
disconnect_from_peer();
|
||||
} else {
|
||||
_cleanup();
|
||||
status = STATUS_ERROR;
|
||||
SSLContextMbedTLS::print_mbedtls_error(ret);
|
||||
}
|
||||
return ERR_CONNECTION_ERROR;
|
||||
}
|
||||
*r_buffer = packet_buffer;
|
||||
r_bytes = ret;
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
void PacketPeerMbedDTLS::poll() {
|
||||
|
||||
if (status == STATUS_HANDSHAKING) {
|
||||
_do_handshake();
|
||||
return;
|
||||
} else if (status != STATUS_CONNECTED) {
|
||||
return;
|
||||
}
|
||||
|
||||
ERR_FAIL_COND(!base.is_valid());
|
||||
|
||||
int ret = mbedtls_ssl_read(ssl_ctx->get_context(), NULL, 0);
|
||||
|
||||
if (ret < 0 && ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE) {
|
||||
if (ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY) {
|
||||
// Also send close notify back
|
||||
disconnect_from_peer();
|
||||
} else {
|
||||
_cleanup();
|
||||
status = STATUS_ERROR;
|
||||
SSLContextMbedTLS::print_mbedtls_error(ret);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
int PacketPeerMbedDTLS::get_available_packet_count() const {
|
||||
|
||||
ERR_FAIL_COND_V(status != STATUS_CONNECTED, 0);
|
||||
|
||||
return mbedtls_ssl_get_bytes_avail(&(ssl_ctx->ssl)) > 0 ? 1 : 0;
|
||||
}
|
||||
|
||||
int PacketPeerMbedDTLS::get_max_packet_size() const {
|
||||
|
||||
return 488; // 512 (UDP in Godot) - 24 (DTLS header)
|
||||
}
|
||||
|
||||
PacketPeerMbedDTLS::PacketPeerMbedDTLS() {
|
||||
|
||||
ssl_ctx.instance();
|
||||
status = STATUS_DISCONNECTED;
|
||||
}
|
||||
|
||||
PacketPeerMbedDTLS::~PacketPeerMbedDTLS() {
|
||||
disconnect_from_peer();
|
||||
}
|
||||
|
||||
void PacketPeerMbedDTLS::disconnect_from_peer() {
|
||||
|
||||
if (status != STATUS_CONNECTED && status != STATUS_HANDSHAKING)
|
||||
return;
|
||||
|
||||
if (status == STATUS_CONNECTED) {
|
||||
int ret = 0;
|
||||
// Send SSL close notification, blocking, but ignore other errors.
|
||||
do
|
||||
ret = mbedtls_ssl_close_notify(ssl_ctx->get_context());
|
||||
while (ret == MBEDTLS_ERR_SSL_WANT_WRITE);
|
||||
}
|
||||
|
||||
_cleanup();
|
||||
}
|
||||
|
||||
PacketPeerMbedDTLS::Status PacketPeerMbedDTLS::get_status() const {
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
PacketPeerDTLS *PacketPeerMbedDTLS::_create_func() {
|
||||
|
||||
return memnew(PacketPeerMbedDTLS);
|
||||
}
|
||||
|
||||
void PacketPeerMbedDTLS::initialize_dtls() {
|
||||
|
||||
_create = _create_func;
|
||||
available = true;
|
||||
}
|
||||
|
||||
void PacketPeerMbedDTLS::finalize_dtls() {
|
||||
_create = NULL;
|
||||
available = false;
|
||||
}
|
88
modules/mbedtls/packet_peer_mbed_dtls.h
Executable file
88
modules/mbedtls/packet_peer_mbed_dtls.h
Executable file
|
@ -0,0 +1,88 @@
|
|||
/*************************************************************************/
|
||||
/* packet_peer_mbed_dtls.h */
|
||||
/*************************************************************************/
|
||||
/* This file is part of: */
|
||||
/* GODOT ENGINE */
|
||||
/* https://godotengine.org */
|
||||
/*************************************************************************/
|
||||
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
|
||||
/* Copyright (c) 2014-2019 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. */
|
||||
/*************************************************************************/
|
||||
|
||||
#ifndef PACKET_PEER_MBED_DTLS_H
|
||||
#define PACKET_PEER_MBED_DTLS_H
|
||||
|
||||
#include "core/io/packet_peer_dtls.h"
|
||||
#include "ssl_context_mbedtls.h"
|
||||
|
||||
#include <mbedtls/timing.h>
|
||||
|
||||
class PacketPeerMbedDTLS : public PacketPeerDTLS {
|
||||
private:
|
||||
enum {
|
||||
PACKET_BUFFER_SIZE = 65536
|
||||
};
|
||||
|
||||
uint8_t packet_buffer[PACKET_BUFFER_SIZE];
|
||||
|
||||
Status status;
|
||||
String hostname;
|
||||
|
||||
Ref<PacketPeerUDP> base;
|
||||
|
||||
static PacketPeerDTLS *_create_func();
|
||||
|
||||
static int bio_recv(void *ctx, unsigned char *buf, size_t len);
|
||||
static int bio_send(void *ctx, const unsigned char *buf, size_t len);
|
||||
void _cleanup();
|
||||
|
||||
protected:
|
||||
Ref<SSLContextMbedTLS> ssl_ctx;
|
||||
mbedtls_timing_delay_context timer;
|
||||
|
||||
static void _bind_methods();
|
||||
|
||||
Error _do_handshake();
|
||||
int _set_cookie();
|
||||
|
||||
public:
|
||||
virtual void poll();
|
||||
virtual Error accept_peer(Ref<PacketPeerUDP> p_base, Ref<CryptoKey> p_key, Ref<X509Certificate> p_cert = Ref<X509Certificate>(), Ref<X509Certificate> p_ca_chain = Ref<X509Certificate>(), Ref<CookieContextMbedTLS> p_cookies = Ref<CookieContextMbedTLS>());
|
||||
virtual Error connect_to_peer(Ref<PacketPeerUDP> p_base, bool p_validate_certs = false, const String &p_for_hostname = String(), Ref<X509Certificate> p_ca_certs = Ref<X509Certificate>());
|
||||
virtual Status get_status() const;
|
||||
|
||||
virtual void disconnect_from_peer();
|
||||
|
||||
virtual Error get_packet(const uint8_t **r_buffer, int &r_buffer_size);
|
||||
virtual Error put_packet(const uint8_t *p_buffer, int p_buffer_size);
|
||||
|
||||
virtual int get_available_packet_count() const;
|
||||
virtual int get_max_packet_size() const;
|
||||
|
||||
static void initialize_dtls();
|
||||
static void finalize_dtls();
|
||||
|
||||
PacketPeerMbedDTLS();
|
||||
~PacketPeerMbedDTLS();
|
||||
};
|
||||
|
||||
#endif // PACKET_PEER_MBED_DTLS_H
|
|
@ -31,16 +31,22 @@
|
|||
#include "register_types.h"
|
||||
|
||||
#include "crypto_mbedtls.h"
|
||||
#include "dtls_server_mbedtls.h"
|
||||
#include "packet_peer_mbed_dtls.h"
|
||||
#include "stream_peer_mbedtls.h"
|
||||
|
||||
void register_mbedtls_types() {
|
||||
|
||||
CryptoMbedTLS::initialize_crypto();
|
||||
StreamPeerMbedTLS::initialize_ssl();
|
||||
PacketPeerMbedDTLS::initialize_dtls();
|
||||
DTLSServerMbedTLS::initialize();
|
||||
}
|
||||
|
||||
void unregister_mbedtls_types() {
|
||||
|
||||
DTLSServerMbedTLS::finalize();
|
||||
PacketPeerMbedDTLS::finalize_dtls();
|
||||
StreamPeerMbedTLS::finalize_ssl();
|
||||
CryptoMbedTLS::finalize_crypto();
|
||||
}
|
||||
|
|
|
@ -43,6 +43,48 @@ void SSLContextMbedTLS::print_mbedtls_error(int 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, NULL, 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");
|
||||
|
||||
|
@ -55,7 +97,7 @@ Error SSLContextMbedTLS::_setup(int p_endpoint, int p_transport, int p_authmode)
|
|||
int ret = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, &entropy, NULL, 0);
|
||||
if (ret != 0) {
|
||||
clear(); // Never leave unusable resources around.
|
||||
ERR_FAIL_V_MSG(FAILED, "mbedtls_ctr_drbg_seed returned an error" + itos(ret));
|
||||
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);
|
||||
|
@ -69,7 +111,7 @@ Error SSLContextMbedTLS::_setup(int p_endpoint, int p_transport, int p_authmode)
|
|||
return OK;
|
||||
}
|
||||
|
||||
Error SSLContextMbedTLS::init_server(int p_transport, int p_authmode, Ref<CryptoKeyMbedTLS> p_pkey, Ref<X509CertificateMbedTLS> p_cert) {
|
||||
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);
|
||||
|
||||
|
@ -94,6 +136,15 @@ Error SSLContextMbedTLS::init_server(int p_transport, int p_authmode, Ref<Crypto
|
|||
if (certs->cert.next) {
|
||||
mbedtls_ssl_conf_ca_chain(&conf, certs->cert.next, NULL);
|
||||
}
|
||||
// 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;
|
||||
}
|
||||
|
@ -139,6 +190,7 @@ void SSLContextMbedTLS::clear() {
|
|||
if (pkey.is_valid())
|
||||
pkey->unlock();
|
||||
pkey = Ref<CryptoKeyMbedTLS>();
|
||||
cookies = Ref<CookieContextMbedTLS>();
|
||||
inited = false;
|
||||
}
|
||||
|
||||
|
|
|
@ -42,6 +42,27 @@
|
|||
#include <mbedtls/debug.h>
|
||||
#include <mbedtls/entropy.h>
|
||||
#include <mbedtls/ssl.h>
|
||||
#include <mbedtls/ssl_cookie.h>
|
||||
|
||||
class SSLContextMbedTLS;
|
||||
|
||||
class CookieContextMbedTLS : public Reference {
|
||||
|
||||
friend class SSLContextMbedTLS;
|
||||
|
||||
protected:
|
||||
bool inited;
|
||||
mbedtls_entropy_context entropy;
|
||||
mbedtls_ctr_drbg_context ctr_drbg;
|
||||
mbedtls_ssl_cookie_ctx cookie_ctx;
|
||||
|
||||
public:
|
||||
Error setup();
|
||||
void clear();
|
||||
|
||||
CookieContextMbedTLS();
|
||||
~CookieContextMbedTLS();
|
||||
};
|
||||
|
||||
class SSLContextMbedTLS : public Reference {
|
||||
|
||||
|
@ -59,10 +80,11 @@ public:
|
|||
mbedtls_ssl_context ssl;
|
||||
mbedtls_ssl_config conf;
|
||||
|
||||
Ref<CookieContextMbedTLS> cookies;
|
||||
Ref<CryptoKeyMbedTLS> pkey;
|
||||
|
||||
Error _setup(int p_endpoint, int p_transport, int p_authmode);
|
||||
Error init_server(int p_transport, int p_authmode, Ref<CryptoKeyMbedTLS> p_pkey, Ref<X509CertificateMbedTLS> p_cert);
|
||||
Error init_server(int p_transport, int p_authmode, Ref<CryptoKeyMbedTLS> p_pkey, Ref<X509CertificateMbedTLS> p_cert, Ref<CookieContextMbedTLS> p_cookies = Ref<CookieContextMbedTLS>());
|
||||
Error init_client(int p_transport, int p_authmode, Ref<X509CertificateMbedTLS> p_valid_cas);
|
||||
void clear();
|
||||
|
||||
|
|
Loading…
Reference in a new issue