mirror of
https://github.com/Relintai/pandemonium_engine_minimal.git
synced 2024-11-17 22:17:19 +01:00
113 lines
2.7 KiB
C++
113 lines
2.7 KiB
C++
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/* hashing_context.cpp */
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#include "hashing_context.h"
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#include "core/crypto/crypto_core.h"
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Error HashingContext::start(HashType p_type) {
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ERR_FAIL_COND_V(ctx != nullptr, ERR_ALREADY_IN_USE);
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_create_ctx(p_type);
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ERR_FAIL_COND_V(ctx == nullptr, ERR_UNAVAILABLE);
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switch (type) {
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case HASH_MD5:
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return ((CryptoCore::MD5Context *)ctx)->start();
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case HASH_SHA1:
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return ((CryptoCore::SHA1Context *)ctx)->start();
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case HASH_SHA256:
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return ((CryptoCore::SHA256Context *)ctx)->start();
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}
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return ERR_UNAVAILABLE;
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}
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Error HashingContext::update(PoolByteArray p_chunk) {
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ERR_FAIL_COND_V(ctx == nullptr, ERR_UNCONFIGURED);
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size_t len = p_chunk.size();
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ERR_FAIL_COND_V(len == 0, FAILED);
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PoolByteArray::Read r = p_chunk.read();
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switch (type) {
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case HASH_MD5:
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return ((CryptoCore::MD5Context *)ctx)->update(&r[0], len);
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case HASH_SHA1:
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return ((CryptoCore::SHA1Context *)ctx)->update(&r[0], len);
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case HASH_SHA256:
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return ((CryptoCore::SHA256Context *)ctx)->update(&r[0], len);
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}
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return ERR_UNAVAILABLE;
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}
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PoolByteArray HashingContext::finish() {
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ERR_FAIL_COND_V(ctx == nullptr, PoolByteArray());
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PoolByteArray out;
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Error err = FAILED;
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switch (type) {
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case HASH_MD5:
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out.resize(16);
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err = ((CryptoCore::MD5Context *)ctx)->finish(out.write().ptr());
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break;
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case HASH_SHA1:
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out.resize(20);
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err = ((CryptoCore::SHA1Context *)ctx)->finish(out.write().ptr());
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break;
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case HASH_SHA256:
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out.resize(32);
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err = ((CryptoCore::SHA256Context *)ctx)->finish(out.write().ptr());
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break;
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}
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_delete_ctx();
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ERR_FAIL_COND_V(err != OK, PoolByteArray());
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return out;
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}
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void HashingContext::_create_ctx(HashType p_type) {
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type = p_type;
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switch (type) {
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case HASH_MD5:
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ctx = memnew(CryptoCore::MD5Context);
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break;
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case HASH_SHA1:
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ctx = memnew(CryptoCore::SHA1Context);
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break;
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case HASH_SHA256:
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ctx = memnew(CryptoCore::SHA256Context);
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break;
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default:
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ctx = nullptr;
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}
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}
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void HashingContext::_delete_ctx() {
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switch (type) {
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case HASH_MD5:
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memdelete((CryptoCore::MD5Context *)ctx);
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break;
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case HASH_SHA1:
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memdelete((CryptoCore::SHA1Context *)ctx);
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break;
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case HASH_SHA256:
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memdelete((CryptoCore::SHA256Context *)ctx);
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break;
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}
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ctx = nullptr;
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}
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void HashingContext::_bind_methods() {
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ClassDB::bind_method(D_METHOD("start", "type"), &HashingContext::start);
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ClassDB::bind_method(D_METHOD("update", "chunk"), &HashingContext::update);
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ClassDB::bind_method(D_METHOD("finish"), &HashingContext::finish);
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BIND_ENUM_CONSTANT(HASH_MD5);
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BIND_ENUM_CONSTANT(HASH_SHA1);
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BIND_ENUM_CONSTANT(HASH_SHA256);
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}
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HashingContext::HashingContext() {
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ctx = nullptr;
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}
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HashingContext::~HashingContext() {
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if (ctx != nullptr) {
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_delete_ctx();
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}
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}
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