AuroraRuntime/Source/Compression/Compressors/DeflateDecompressor.hpp
Reece Wilson 8844e8fe64 [+] AuCrypto::BCrypt
> GetForcedMinRounds
> GenSalt
> HashPW
> HashPWEx
> CheckPassword
> CheckPasswordEx
[*] Refactor AuCompression APIs
[*] Clean up AuTryConstructs
[+] Internal compression API for compression based interceptors
[+] Root-level input stream arg check for all compression apis (harden)
[*] Clean up AuCompression code
[+] Solar Designer / OpenWall blowfish crypt
[*] BlowCrypt: accept length input parameter
[*] Split locale into 2 source files
[-] Ugly comment from Open.Win32.cpp. TODO: Readd later. Might warn on empty string bc it makes sense given, "." and "/" normalizes to nothing, and memory pre-idc-if-drops are dropped siliently.
2022-09-15 20:48:50 +01:00

123 lines
3.2 KiB
C++

/***
Copyright (C) 2022 J Reece Wilson (a/k/a "Reece"). All rights reserved.
File: DeflateDecompressor.hpp
Date: 2022-2-15
Author: Reece
***/
#pragma once
#include "zlib.h"
namespace Aurora::Compression
{
struct ZIPInflate : BaseStream
{
DecompressInfo meta;
ZIPInflate(const DecompressInfo &meta, bool hasBits, AuInt8 bits) : meta(meta), BaseStream(meta.uInternalStreamSize), cBits_(bits), bHasBits_(hasBits)
{}
~ZIPInflate()
{
if (this->init_)
{
inflateEnd(&this->ctx_);
}
}
bool Init(const AuSPtr<IO::IStreamReader> &reader) override
{
int ret;
this->pReader_ = reader;
if (!this->IsValid())
{
SysPushErrorMem();
return false;
}
if (this->bHasBits_)
{
ret = inflateInit2(&this->ctx_, this->cBits_);
}
else
{
ret = inflateInit(&this->ctx_);
}
if (ret < Z_OK)
{
SysPushErrorMem("Error: {}", zError(ret));
return false;
}
this->init_ = true;
this->SetArray(this->din_);
return true;
}
AuStreamReadWrittenPair_t Ingest_s(AuUInt32 input) override
{
AuUInt32 done {}, read {};
if (!this->pReader_)
{
return {};
}
while (read < input)
{
read += IngestForInPointer<Bytef, uInt>(this->pReader_, this->ctx_.next_in, this->ctx_.avail_in, input - read);
if (!this->ctx_.avail_in)
{
return {read, done};
}
do
{
this->ctx_.avail_out = AuArraySize(this->dout_);
this->ctx_.next_out = this->dout_;
if (!this->ctx_.avail_out)
{
break;
}
auto ret = inflate(&this->ctx_, Z_NO_FLUSH);
if (ret < Z_OK)
{
SysPushErrorIO("Error: {}", zError(ret));
this->pReader_.reset();
return AuMakePair(read, 0);
}
auto have = AuArraySize(this->dout_) - this->ctx_.avail_out;
done += have;
if (!Write(reinterpret_cast<const AuUInt8 *>(this->dout_),
have))
{
this->pReader_.reset();
SysPushErrorIO("Memory Error");
return AuMakePair(read, 0);
}
}
while (this->ctx_.avail_out == 0);
}
return {read, done};
}
private:
AuSPtr<IO::IStreamReader> pReader_;
z_stream ctx_ {};
bool init_ {};
bool bHasBits_;
AuInt8 cBits_;
unsigned char din_[kChunkSize];
unsigned char dout_[kChunkSize];
};
}