diff options
Diffstat (limited to 'core/crypto/hashing_context.cpp')
| -rw-r--r-- | core/crypto/hashing_context.cpp | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/core/crypto/hashing_context.cpp b/core/crypto/hashing_context.cpp new file mode 100644 index 0000000000..bdccb258dd --- /dev/null +++ b/core/crypto/hashing_context.cpp @@ -0,0 +1,137 @@ +/*************************************************************************/ +/* hashing_context.cpp */ +/*************************************************************************/ +/* 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. */ +/*************************************************************************/ + +#include "hashing_context.h" + +#include "core/crypto/crypto_core.h" + +Error HashingContext::start(HashType p_type) { + ERR_FAIL_COND_V(ctx != NULL, ERR_ALREADY_IN_USE); + _create_ctx(p_type); + ERR_FAIL_COND_V(ctx == NULL, 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(PoolByteArray p_chunk) { + ERR_FAIL_COND_V(ctx == NULL, ERR_UNCONFIGURED); + size_t len = p_chunk.size(); + PoolByteArray::Read r = p_chunk.read(); + 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; +} + +PoolByteArray HashingContext::finish() { + ERR_FAIL_COND_V(ctx == NULL, PoolByteArray()); + PoolByteArray out; + Error err = FAILED; + switch (type) { + case HASH_MD5: + out.resize(16); + err = ((CryptoCore::MD5Context *)ctx)->finish(out.write().ptr()); + break; + case HASH_SHA1: + out.resize(20); + err = ((CryptoCore::SHA1Context *)ctx)->finish(out.write().ptr()); + break; + case HASH_SHA256: + out.resize(32); + err = ((CryptoCore::SHA256Context *)ctx)->finish(out.write().ptr()); + break; + } + _delete_ctx(); + ERR_FAIL_COND_V(err != OK, PoolByteArray()); + 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 = NULL; + } +} + +void HashingContext::_delete_ctx() { + return; + 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 = NULL; +} + +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() { + ctx = NULL; +} + +HashingContext::~HashingContext() { + if (ctx != NULL) + _delete_ctx(); +} |