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54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
/**
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* Author......: See docs/credits.txt
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* License.....: MIT
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*/
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// CREDITS go to the UnRAR project from rarlab.com
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// see license.txt file
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#include "rar.hpp"
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#define WINSIZE 0x100000 // minimum window size 0x20000 (MinAllocSize is 0x40000), 1 MiB
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#define SOLID false
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#define METHOD VER_UNPACK // 29 for RAR3 archives
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extern "C" unsigned int hc_decompress_rar (unsigned char *Win, unsigned char *Inp, unsigned char *VM, unsigned char *PPM, const unsigned int OutputSize, const unsigned char *Input, const unsigned int PackSize, const unsigned int UnpackSize, const unsigned char *Key, const unsigned char *IV)
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{
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ComprDataIO DataIO;
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DataIO.InitRijindal ((byte *) Key, (byte *) IV);
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DataIO.SetPackedSizeToRead (PackSize);
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DataIO.SetTestMode (false);
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DataIO.SetSkipUnpCRC (false); // or 'true', if we use our own crc32 code
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DataIO.UnpHash.Init (HASH_CRC32, 1); // 1: 1 single thread ?
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DataIO.SetUnpackFromMemory ((byte *) Input, PackSize);
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DataIO.SetUnpackToMemory ((byte *) NULL, UnpackSize);
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Unpack Unp = Unpack (&DataIO);
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// not needed in our tests (no false positives):
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// memset (Win, 0, UnpackSize);
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// #define INPSIZE 0x50000
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// memset (Inp, 0, INPSIZE);
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// memset (VM, 0, INPSIZE);
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// #define PPMSIZE 216 * 1024 * 1024
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// memset (PPM, 0, PPMSIZE);
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Unp.SetWin (Win);
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Unp.SetPPM (PPM);
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Unp.Init (WINSIZE, SOLID);
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Unp.SetDestSize (UnpackSize);
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Unp.SetExternalBuffer (Inp, VM);
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Unp.DoUnpack (METHOD, SOLID); // sets output
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unsigned int crc32 = (unsigned int) DataIO.UnpHash.GetCRC32 ();
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return crc32;
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}
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