134 lines
4.7 KiB
C++
134 lines
4.7 KiB
C++
/*************************************************************************/
|
|
/* hashing_context.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 "hashing_context.h"
|
|
|
|
#include "core/crypto/crypto_core.h"
|
|
|
|
Error HashingContext::start(HashType p_type) {
|
|
ERR_FAIL_COND_V(ctx != nullptr, ERR_ALREADY_IN_USE);
|
|
_create_ctx(p_type);
|
|
ERR_FAIL_COND_V(ctx == nullptr, ERR_UNAVAILABLE);
|
|
switch (type) {
|
|
case HASH_MD5:
|
|
return ((CryptoCore::MD5Context *)ctx)->start();
|
|
case HASH_SHA1:
|
|
return ((CryptoCore::SHA1Context *)ctx)->start();
|
|
case HASH_SHA256:
|
|
return ((CryptoCore::SHA256Context *)ctx)->start();
|
|
}
|
|
return ERR_UNAVAILABLE;
|
|
}
|
|
|
|
Error HashingContext::update(PackedByteArray p_chunk) {
|
|
ERR_FAIL_COND_V(ctx == nullptr, ERR_UNCONFIGURED);
|
|
size_t len = p_chunk.size();
|
|
ERR_FAIL_COND_V(len == 0, FAILED);
|
|
const uint8_t *r = p_chunk.ptr();
|
|
switch (type) {
|
|
case HASH_MD5:
|
|
return ((CryptoCore::MD5Context *)ctx)->update(&r[0], len);
|
|
case HASH_SHA1:
|
|
return ((CryptoCore::SHA1Context *)ctx)->update(&r[0], len);
|
|
case HASH_SHA256:
|
|
return ((CryptoCore::SHA256Context *)ctx)->update(&r[0], len);
|
|
}
|
|
return ERR_UNAVAILABLE;
|
|
}
|
|
|
|
PackedByteArray HashingContext::finish() {
|
|
ERR_FAIL_COND_V(ctx == nullptr, PackedByteArray());
|
|
PackedByteArray out;
|
|
Error err = FAILED;
|
|
switch (type) {
|
|
case HASH_MD5:
|
|
out.resize(16);
|
|
err = ((CryptoCore::MD5Context *)ctx)->finish(out.ptrw());
|
|
break;
|
|
case HASH_SHA1:
|
|
out.resize(20);
|
|
err = ((CryptoCore::SHA1Context *)ctx)->finish(out.ptrw());
|
|
break;
|
|
case HASH_SHA256:
|
|
out.resize(32);
|
|
err = ((CryptoCore::SHA256Context *)ctx)->finish(out.ptrw());
|
|
break;
|
|
}
|
|
_delete_ctx();
|
|
ERR_FAIL_COND_V(err != OK, PackedByteArray());
|
|
return out;
|
|
}
|
|
|
|
void HashingContext::_create_ctx(HashType p_type) {
|
|
type = p_type;
|
|
switch (type) {
|
|
case HASH_MD5:
|
|
ctx = memnew(CryptoCore::MD5Context);
|
|
break;
|
|
case HASH_SHA1:
|
|
ctx = memnew(CryptoCore::SHA1Context);
|
|
break;
|
|
case HASH_SHA256:
|
|
ctx = memnew(CryptoCore::SHA256Context);
|
|
break;
|
|
default:
|
|
ctx = nullptr;
|
|
}
|
|
}
|
|
|
|
void HashingContext::_delete_ctx() {
|
|
switch (type) {
|
|
case HASH_MD5:
|
|
memdelete((CryptoCore::MD5Context *)ctx);
|
|
break;
|
|
case HASH_SHA1:
|
|
memdelete((CryptoCore::SHA1Context *)ctx);
|
|
break;
|
|
case HASH_SHA256:
|
|
memdelete((CryptoCore::SHA256Context *)ctx);
|
|
break;
|
|
}
|
|
ctx = nullptr;
|
|
}
|
|
|
|
void HashingContext::_bind_methods() {
|
|
ClassDB::bind_method(D_METHOD("start", "type"), &HashingContext::start);
|
|
ClassDB::bind_method(D_METHOD("update", "chunk"), &HashingContext::update);
|
|
ClassDB::bind_method(D_METHOD("finish"), &HashingContext::finish);
|
|
BIND_ENUM_CONSTANT(HASH_MD5);
|
|
BIND_ENUM_CONSTANT(HASH_SHA1);
|
|
BIND_ENUM_CONSTANT(HASH_SHA256);
|
|
}
|
|
|
|
HashingContext::~HashingContext() {
|
|
if (ctx != nullptr)
|
|
_delete_ctx();
|
|
}
|