1974 lines
52 KiB
C++
1974 lines
52 KiB
C++
#include "bzip2/bzlib.h"
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#include "UnAlz.h"
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#ifdef _WIN32
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# include "zlib/zlib.h"
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#else
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# include <zlib.h>
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#endif
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#ifdef _WIN32
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# pragma warning( disable : 4996 ) // crt secure warning
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#endif
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// utime 함수 처리
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#if defined(_WIN32) || defined(__CYGWIN__)
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# include <time.h>
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# include <sys/utime.h>
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#endif
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#ifdef __GNUC__
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# include <time.h>
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# include <utime.h>
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#endif
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// mkdir
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#ifdef _WIN32
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# include <direct.h>
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#else
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# include <sys/stat.h>
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#endif
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#ifdef _UNALZ_ICONV // code page support
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# include <iconv.h>
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#endif
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#if defined(__linux__) || defined(__GLIBC__) || defined(__GNU__) || defined(__APPLE__)
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# include <errno.h>
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#endif
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#if defined(__NetBSD__)
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# include <sys/param.h> // __NetBSD_Version__
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# include <errno.h> // iconv.h 때문에 필요
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#endif
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#ifdef _WIN32 // safe string 처리
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# include <strsafe.h>
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#endif
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// ENDIAN 처리
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#ifdef _WIN32 // (L)
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# define swapint64(a) (UINT64) ( (((a)&0x00000000000000FFL) << 56) | (((a)&0x000000000000FF00L) << 40) | (((a)&0x0000000000FF0000L) << 24) | (((a)&0x00000000FF000000L) << 8) | (((a)&0x000000FF00000000L) >> 8) | (((a)&0x0000FF0000000000L) >> 24) | (((a)&0x00FF000000000000L) >> 40) | (((a)&0xFF00000000000000L) >> 56) )
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#else // (LL)
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# define swapint64(a) (UINT64) ( (((a)&0x00000000000000FFLL) << 56) | (((a)&0x000000000000FF00LL) << 40) | (((a)&0x0000000000FF0000LL) << 24) | (((a)&0x00000000FF000000LL) << 8) | (((a)&0x000000FF00000000LL) >> 8) | (((a)&0x0000FF0000000000LL) >> 24) | (((a)&0x00FF000000000000LL) >> 40) | (((a)&0xFF00000000000000LL) >> 56) )
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#endif
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#define swapint32(a) ((((a)&0xff)<<24)+(((a>>8)&0xff)<<16)+(((a>>16)&0xff)<<8)+(((a>>24)&0xff)))
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#define swapint16(a) (((a)&0xff)<<8)+(((a>>8)&0xff))
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typedef UINT16 (*_unalz_le16toh)(UINT16 a);
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typedef UINT32 (*_unalz_le32toh)(UINT32 a);
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typedef UINT64 (*_unalz_le64toh)(UINT64 a);
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static _unalz_le16toh unalz_le16toh=NULL;
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static _unalz_le32toh unalz_le32toh=NULL;
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static _unalz_le64toh unalz_le64toh=NULL;
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static UINT16 le16tole(UINT16 a){return a;}
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static UINT32 le32tole(UINT32 a){return a;}
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static UINT64 le64tole(UINT64 a){return a;}
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static UINT16 le16tobe(UINT16 a){return swapint16(a);}
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static UINT32 le32tobe(UINT32 a){return swapint32(a);}
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static UINT64 le64tobe(UINT64 a){return swapint64(a);}
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#ifndef MAX_PATH
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# define MAX_PATH 260*6 // 그냥 .. 충분히..
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#endif
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#ifdef _WIN32
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# define PATHSEP "\\"
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# define PATHSEPC '\\'
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#else
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# define PATHSEP "/"
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# define PATHSEPC '/'
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#endif
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static time_t dosTime2TimeT(UINT32 dostime) // from INFO-ZIP src
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{
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struct tm t;
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t.tm_isdst = -1;
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t.tm_sec = (((int)dostime) << 1) & 0x3e;
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t.tm_min = (((int)dostime) >> 5) & 0x3f;
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t.tm_hour = (((int)dostime) >> 11) & 0x1f;
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t.tm_mday = (int)(dostime >> 16) & 0x1f;
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t.tm_mon = ((int)(dostime >> 21) & 0x0f) - 1;
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t.tm_year = ((int)(dostime >> 25) & 0x7f) + 80;
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return mktime(&t);
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}
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static BOOL IsBigEndian(void)
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{
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union {
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short a;
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char b[2];
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} endian;
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endian.a = 0x0102;
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if(endian.b[0] == 0x02) return FALSE;
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return TRUE;
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}
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#ifdef _WIN32
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# define safe_sprintf StringCbPrintfA
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#else
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# define safe_sprintf snprintf
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#endif
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// 64bit file handling support
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#if (_FILE_OFFSET_BITS==64)
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# define unalz_fseek fseeko
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# define unalz_ftell ftello
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#else
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# define unalz_fseek fseek
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# define unalz_ftell ftell
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#endif
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// error string table <- CUnAlz::ERR 의 번역
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static const char* errorstrtable[]=
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{
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"no error", // ERR_NOERR
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"general error", // ERR_GENERAL
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"can't open archive file", // ERR_CANT_OPEN_FILE
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"can't open dest file or path", // ERR_CANT_OPEN_DEST_FILE
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// "can't create dest path", // ERR_CANT_CREATE_DEST_PATH
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"corrupted file", // ERR_CORRUPTED_FILE
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"not alz file", // ERR_NOT_ALZ_FILE
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"can't read signature", // ERR_CANT_READ_SIG
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"can't read file", // ERR_CANT_READ_FILE
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"error at read header", // ERR_AT_READ_HEADER
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"invalid filename length", // ERR_INVALID_FILENAME_LENGTH
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"invalid extrafield length", // ERR_INVALID_EXTRAFIELD_LENGTH,
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"can't read central directory structure head", // ERR_CANT_READ_CENTRAL_DIRECTORY_STRUCTURE_HEAD,
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"invalid filename size", // ERR_INVALID_FILENAME_SIZE,
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"invalid extrafield size", // ERR_INVALID_EXTRAFIELD_SIZE,
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"invalid filecomment size", // ERR_INVALID_FILECOMMENT_SIZE,
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"cant' read header", // ERR_CANT_READ_HEADER,
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"memory allocation failed", // ERR_MEM_ALLOC_FAILED,
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"file read error", // ERR_FILE_READ_ERROR,
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"inflate failed", // ERR_INFLATE_FAILED,
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"bzip2 decompress failed", // ERR_BZIP2_FAILED,
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"invalid file CRC", // ERR_INVALID_FILE_CRC
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"unknown compression method", // ERR_UNKNOWN_COMPRESSION_METHOD
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"iconv-can't open iconv", // ERR_ICONV_CANT_OPEN,
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"iconv-invalid multisequence of characters", // ERR_ICONV_INVALID_MULTISEQUENCE_OF_CHARACTERS,
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"iconv-incomplete multibyte sequence", // ERR_ICONV_INCOMPLETE_MULTIBYTE_SEQUENCE,
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"iconv-not enough space of buffer to convert", // ERR_ICONV_NOT_ENOUGH_SPACE_OF_BUFFER_TO_CONVERT,
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"iconv-etc", // ERR_ICONV_ETC,
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"password was not set", // ERR_PASSWD_NOT_SET,
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"invalid password", // ERR_INVALID_PASSWD,
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"user aborted",
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// ctor
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/// @date 2004-03-06 오후 11:19:49
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////////////////////////////////////////////////////////////////////////////////////////////////////
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CUnAlz::CUnAlz()
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{
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memset(m_files, 0, sizeof(m_files));
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m_nErr = ERR_NOERR;
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m_posCur = m_fileList.end();//(FileList::iterator)NULL;
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m_pFuncCallBack = NULL;
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m_pCallbackParam = NULL;
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m_bHalt = FALSE;
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m_nFileCount = 0;
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m_nCurFile = -1;
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m_nVirtualFilePos = 0;
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m_nCurFilePos = 0;
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m_bIsEOF = FALSE;
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m_bIsEncrypted = FALSE;
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m_bIsDataDescr = FALSE;
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m_bPipeMode = FALSE;
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#ifdef _UNALZ_ICONV
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#ifdef _UNALZ_UTF8
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safe_strcpy(m_szToCodepage, "UTF-8",UNALZ_LEN_CODEPAGE) ; // 기본적으로 utf-8
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#else
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safe_strcpy(m_szToCodepage, "CP949",UNALZ_LEN_CODEPAGE) ; // 기본적으로 CP949
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#endif // _UNALZ_UTF8
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safe_strcpy(m_szFromCodepage, "CP949",UNALZ_LEN_CODEPAGE); // alz 는 949 만 지원
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#endif // _UNALZ_ICONV
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// check endian
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if(unalz_le16toh==NULL)
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{
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if(IsBigEndian())
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{
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unalz_le16toh = le16tobe;
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unalz_le32toh = le32tobe;
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unalz_le64toh = le64tobe;
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}
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else
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{
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unalz_le16toh = le16tole;
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unalz_le32toh = le32tole;
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unalz_le64toh = le64tole;
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// dtor
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/// @date 2004-03-06 오후 11:19:52
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////////////////////////////////////////////////////////////////////////////////////////////////////
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CUnAlz::~CUnAlz()
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{
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Close();
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// progress callback func setting
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/// @date 2004-03-01 오전 6:02:05
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////////////////////////////////////////////////////////////////////////////////////////////////////
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void CUnAlz::SetCallback(_UnAlzCallback* pFunc, void* param)
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{
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m_pFuncCallBack = pFunc;
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m_pCallbackParam = param;
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}
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#ifdef _WIN32
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#if !defined(__GNUWIN32__) && !defined(__GNUC__)
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// 파일 열기
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/// @param szPathName
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/// @return
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/// @date 2004-03-06 오후 11:03:59
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////////////////////////////////////////////////////////////////////////////////////////////////////
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BOOL CUnAlz::Open(LPCWSTR szPathName)
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{
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char szPathNameA[MAX_PATH];
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::WideCharToMultiByte(CP_ACP, 0, szPathName, -1, szPathNameA, MAX_PATH, NULL, NULL);
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return Open(szPathNameA);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// 대상 파일 세팅하기.
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/// @param szFileName
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/// @return
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/// @date 2004-03-06 오후 11:06:20
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////////////////////////////////////////////////////////////////////////////////////////////////////
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BOOL CUnAlz::SetCurrentFile(LPCWSTR szFileName)
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{
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char szFileNameA[MAX_PATH];
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::WideCharToMultiByte(CP_ACP, 0, szFileName, -1, szFileNameA, MAX_PATH, NULL, NULL);
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return SetCurrentFile(szFileNameA);
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}
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BOOL CUnAlz::IsFolder(LPCWSTR szPathName)
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{
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UINT32 dwRet;
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dwRet = GetFileAttributesW(szPathName);
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if(dwRet==0xffffffff) return FALSE;
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if(dwRet & FILE_ATTRIBUTE_DIRECTORY) return TRUE;
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return FALSE;
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}
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#endif // __GNUWIN32__
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#endif // _WIN32
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BOOL CUnAlz::Open(const char* szPathName)
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{
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if(FOpen(szPathName)==FALSE)
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{
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m_nErr = ERR_CANT_OPEN_FILE;
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return FALSE;
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}
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BOOL bValidAlzHeader = FALSE;
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// file 분석시작..
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for(;;)
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{
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SIGNATURE sig;
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BOOL ret;
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if(FEof()) break;
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//int pos = unalz_ftell(m_fp);
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sig = ReadSignature();
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if(sig==SIG_EOF)
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{
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break;
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}
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if(sig==SIG_ERROR)
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{
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if(bValidAlzHeader)
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m_nErr = ERR_CORRUPTED_FILE; // 손상된 파일
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else
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m_nErr = ERR_NOT_ALZ_FILE; // alz 파일이 아니다.
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return FALSE; // 깨진 파일..
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}
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if(sig==SIG_ALZ_FILE_HEADER)
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{
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ret = ReadAlzFileHeader();
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bValidAlzHeader = TRUE; // alz 파일은 맞다.
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}
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else if(sig==SIG_LOCAL_FILE_HEADER) ret = ReadLocalFileheader();
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else if(sig==SIG_CENTRAL_DIRECTORY_STRUCTURE) ret = ReadCentralDirectoryStructure();
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else if(sig==SIG_ENDOF_CENTRAL_DIRECTORY_RECORD) ret = ReadEndofCentralDirectoryRecord();
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else
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{
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// 미구현된 signature ? 깨진 파일 ?
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ASSERT(0);
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m_nErr = ERR_CORRUPTED_FILE;
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return FALSE;
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}
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if(ret==FALSE)
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{
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return FALSE;
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}
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if(FEof()) break;
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}
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return TRUE;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// 파일 닫기..
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/// @return
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/// @date 2004-03-06 오후 11:04:21
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////////////////////////////////////////////////////////////////////////////////////////////////////
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void CUnAlz::Close()
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{
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FClose();
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// 목록 날리기..
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FileList::iterator i;
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for(i=m_fileList.begin(); i<m_fileList.end(); i++)
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{
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i->Clear();
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}
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m_posCur = m_fileList.end();//(FileList::iterator)NULL;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// FILE 내의 SIGNATURE 읽기
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/// @return
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/// @date 2004-03-06 오후 11:04:47
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////////////////////////////////////////////////////////////////////////////////////////////////////
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CUnAlz::SIGNATURE CUnAlz::ReadSignature()
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{
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UINT32 dwSig;
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if(FRead(&dwSig, sizeof(dwSig))==FALSE)
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{
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if(FEof())
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return SIG_EOF;
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m_nErr = ERR_CANT_READ_SIG;
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return SIG_ERROR;
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}
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return (SIGNATURE)unalz_le32toh(dwSig); // little to host;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// ALZ HEADER SIGNATURE 읽기
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/// @return
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/// @date 2004-03-06 오후 11:05:11
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////////////////////////////////////////////////////////////////////////////////////////////////////
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BOOL CUnAlz::ReadAlzFileHeader()
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{
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SAlzHeader header;
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if(FRead(&header, sizeof(header))==FALSE)
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{
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ASSERT(0);
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m_nErr = ERR_CANT_READ_FILE;
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return FALSE;
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}
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return TRUE;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// 각각의 파일 헤더 읽기
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/// @return
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/// @date 2004-03-06 오후 11:05:18
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////////////////////////////////////////////////////////////////////////////////////////////////////
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BOOL CUnAlz::ReadLocalFileheader()
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{
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SAlzLocalFileHeader zipHeader;
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int ret;
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ret = FRead(&(zipHeader.head), sizeof(zipHeader.head));
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if(ret==FALSE)
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{
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m_nErr = ERR_AT_READ_HEADER;
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return FALSE;
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}
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// ALZ 확장..
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if( (zipHeader.head.fileDescriptor & (SHORT)1) != 0){
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m_bIsEncrypted = TRUE; // 하나라도 암호 걸렸으면 세팅한다.
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}
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if( (zipHeader.head.fileDescriptor & (SHORT)8) != 0){
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m_bIsDataDescr = TRUE;
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}
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int byteLen = zipHeader.head.fileDescriptor/0x10;
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if(byteLen)
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{
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FRead(&(zipHeader.compressionMethod), sizeof(zipHeader.compressionMethod));
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FRead(&(zipHeader.unknown), sizeof(zipHeader.unknown));
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FRead(&(zipHeader.fileCRC), sizeof(zipHeader.fileCRC));
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FRead(&(zipHeader.compressedSize), byteLen);
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FRead(&(zipHeader.uncompressedSize), byteLen); // 압축 사이즈가 없다.
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}
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// little to system
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zipHeader.fileCRC = unalz_le32toh(zipHeader.fileCRC);
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zipHeader.head.fileNameLength = unalz_le16toh(zipHeader.head.fileNameLength);
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zipHeader.compressedSize = unalz_le64toh(zipHeader.compressedSize);
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zipHeader.uncompressedSize = unalz_le64toh(zipHeader.uncompressedSize);
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// FILE NAME
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zipHeader.fileName = (char*)malloc(zipHeader.head.fileNameLength+sizeof(char));
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if(zipHeader.fileName==NULL)
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{
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m_nErr = ERR_INVALID_FILENAME_LENGTH;
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return FALSE;
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}
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FRead(zipHeader.fileName, zipHeader.head.fileNameLength);
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if(zipHeader.head.fileNameLength > MAX_PATH - 5)
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zipHeader.head.fileNameLength = MAX_PATH - 5;
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zipHeader.fileName[zipHeader.head.fileNameLength] = (CHAR)NULL;
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#ifdef _UNALZ_ICONV // codepage convert
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if(strlen(m_szToCodepage))
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{
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#define ICONV_BUF_SIZE (260*6) // utf8 은 최대 6byte
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size_t ileft, oleft;
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iconv_t cd;
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size_t iconv_result;
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size_t size;
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char inbuf[ICONV_BUF_SIZE];
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char outbuf[ICONV_BUF_SIZE];
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#if defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__NetBSD__)
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const char *inptr = inbuf;
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#else
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char *inptr = inbuf;
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#endif
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char *outptr = outbuf;
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size = strlen(zipHeader.fileName)+1;
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strncpy(inbuf, zipHeader.fileName, size);
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ileft = size;
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oleft = sizeof(outbuf);
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cd = iconv_open(m_szToCodepage, m_szFromCodepage); // 보통 "CP949" 에서 "UTF-8" 로
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iconv(cd, NULL, NULL, NULL, NULL);
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if( cd == (iconv_t)(-1))
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{
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m_nErr = ERR_ICONV_CANT_OPEN; // printf("Converting Error : Cannot open iconv");
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return FALSE;
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}
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else
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{
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iconv_result = iconv(cd, &inptr, &ileft, &outptr, &oleft);
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if(iconv_result== (size_t)(-1)) // iconv 실패..
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{
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if (errno == EILSEQ)
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m_nErr = ERR_ICONV_INVALID_MULTISEQUENCE_OF_CHARACTERS; // printf("Invalid Multibyte Sequence of Characters");
|
|
else if (errno == EINVAL)
|
|
m_nErr = ERR_ICONV_INCOMPLETE_MULTIBYTE_SEQUENCE; //printf("Incomplete multibyte sequence");
|
|
else if (errno != E2BIG)
|
|
m_nErr = ERR_ICONV_NOT_ENOUGH_SPACE_OF_BUFFER_TO_CONVERT; // printf("Not enough space of buffer to convert");
|
|
else
|
|
m_nErr = ERR_ICONV_ETC;
|
|
iconv_close(cd);
|
|
return FALSE;
|
|
}
|
|
else
|
|
{
|
|
outbuf[ICONV_BUF_SIZE-oleft] = 0;
|
|
if(zipHeader.fileName) free(zipHeader.fileName);
|
|
zipHeader.fileName = strdup(outbuf);
|
|
if (zipHeader.fileName == NULL)
|
|
{
|
|
m_nErr = ERR_ICONV_ETC;
|
|
iconv_close(cd);
|
|
return FALSE;
|
|
}
|
|
// printf("\n Converted File Name : %s", outbuf);
|
|
}
|
|
|
|
iconv_close(cd);
|
|
}
|
|
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
// EXTRA FIELD LENGTH
|
|
if(zipHeader.head.extraFieldLength)
|
|
{
|
|
zipHeader.extraField = (BYTE*)malloc(zipHeader.head.extraFieldLength);
|
|
if(zipHeader.extraField==NULL)
|
|
{
|
|
m_nErr = ERR_INVALID_EXTRAFIELD_LENGTH;
|
|
return FALSE;
|
|
}
|
|
FRead(zipHeader.extraField, 1, zipHeader.head.extraFieldLength);
|
|
}
|
|
*/
|
|
|
|
if(IsEncryptedFile(zipHeader.head.fileDescriptor))
|
|
FRead(zipHeader.encChk, ALZ_ENCR_HEADER_LEN); // xf86
|
|
|
|
// SKIP FILE DATA
|
|
zipHeader.dwFileDataPos = FTell(); // data 의 위치 저장하기..
|
|
FSeek(FTell()+zipHeader.compressedSize);
|
|
|
|
// DATA DESCRIPTOR
|
|
/*
|
|
if(zipHeader.head.generalPurposeBitFlag.bit1)
|
|
{
|
|
FRead(zipHeader.extraField, 1, sizeof(zipHeader.extraField),);
|
|
}
|
|
*/
|
|
|
|
/*
|
|
#ifdef _DEBUG
|
|
printf("NAME:%s COMPRESSED SIZE:%d UNCOMPRESSED SIZE:%d COMP METHOD:%d\n",
|
|
zipHeader.fileName,
|
|
zipHeader.compressedSize,
|
|
zipHeader.uncompressedSize,
|
|
zipHeader.compressionMethod
|
|
);
|
|
#endif
|
|
*/
|
|
|
|
// 파일을 목록에 추가한다..
|
|
m_fileList.push_back(zipHeader);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
BOOL CUnAlz::ReadCentralDirectoryStructure()
|
|
{
|
|
SCentralDirectoryStructure header;
|
|
|
|
if(FRead(&header, sizeof(header.head))==FALSE)
|
|
{
|
|
m_nErr = ERR_CANT_READ_CENTRAL_DIRECTORY_STRUCTURE_HEAD;
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
// read file name
|
|
if(header.head.fileNameLength)
|
|
{
|
|
header.fileName = (char*)malloc(header.head.fileNameLength+1);
|
|
if(header.fileName==NULL)
|
|
{
|
|
m_nErr = ERR_INVALID_FILENAME_SIZE;
|
|
return FALSE;
|
|
}
|
|
FRead(header.fileName, 1, header.head.fileNameLength, m_fp);
|
|
header.fileName[header.head.fileNameLength] = NULL;
|
|
}
|
|
|
|
// extra field;
|
|
if(header.head.extraFieldLength)
|
|
{
|
|
header.extraField = (BYTE*)malloc(header.head.extraFieldLength);
|
|
if(header.extraField==NULL)
|
|
{
|
|
m_nErr = ERR_INVALID_EXTRAFIELD_SIZE;
|
|
return FALSE;
|
|
}
|
|
FRead(header.extraField, 1, header.head.extraFieldLength, m_fp);
|
|
}
|
|
|
|
// file comment;
|
|
if(header.head.fileCommentLength)
|
|
{
|
|
header.fileComment = (char*)malloc(header.head.fileCommentLength+1);
|
|
if(header.fileComment==NULL)
|
|
{
|
|
m_nErr = ERR_INVALID_FILECOMMENT_SIZE;
|
|
return FALSE;
|
|
}
|
|
FRead(header.fileComment, 1, header.head.fileCommentLength, m_fp);
|
|
header.fileComment[header.head.fileCommentLength] = NULL;
|
|
}
|
|
*/
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
BOOL CUnAlz::ReadEndofCentralDirectoryRecord()
|
|
{
|
|
/*
|
|
SEndOfCentralDirectoryRecord header;
|
|
|
|
if(FRead(&header, sizeof(header.head), 1, m_fp)!=1)
|
|
{
|
|
m_nErr = ERR_CANT_READ_HEADER;
|
|
return FALSE;
|
|
}
|
|
|
|
if(header.head.zipFileCommentLength)
|
|
{
|
|
header.fileComment = (char*)malloc(header.head.zipFileCommentLength+1);
|
|
if(header.fileComment==NULL)
|
|
{
|
|
m_nErr = ERR_INVALID_FILECOMMENT_SIZE;
|
|
return FALSE;
|
|
}
|
|
FRead(header.fileComment, 1, header.head.zipFileCommentLength, m_fp);
|
|
header.fileComment[header.head.zipFileCommentLength] = NULL;
|
|
}
|
|
*/
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
BOOL CUnAlz::SetCurrentFile(const char* szFileName)
|
|
{
|
|
FileList::iterator i;
|
|
|
|
// 순차적으로 찾는다.
|
|
for(i=m_fileList.begin(); i<m_fileList.end(); i++)
|
|
{
|
|
#ifdef _WIN32
|
|
if(stricmp(i->fileName, szFileName)==0)
|
|
#else
|
|
if(strcmp(i->fileName, szFileName)==0)
|
|
#endif
|
|
{
|
|
m_posCur = i;
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
m_posCur = m_fileList.end();//(FileList::iterator)NULL;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
void CUnAlz::SetCurrentFile(FileList::iterator newPos)
|
|
{
|
|
m_posCur = newPos;
|
|
}
|
|
|
|
#ifndef MAX_WBITS
|
|
# define MAX_WBITS 15 /* 32K LZ77 window */
|
|
#endif
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 버퍼에 압축 풀기. 버퍼는 당근 충분한 크기가 준비되어 있어야 한다.
|
|
/// @param pDestBuf
|
|
/// @return
|
|
/// @date 2004-03-07 오전 12:26:13
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BOOL CUnAlz::ExtractCurrentFileToBuf(BYTE* pDestBuf, int nBufSize)
|
|
{
|
|
SExtractDest dest;
|
|
dest.nType = ET_MEM;
|
|
dest.buf = pDestBuf;
|
|
dest.bufpos = 0;
|
|
dest.bufsize = nBufSize;
|
|
return ExtractTo(&dest);
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 현재 파일 (SetCurrentFile로 지)을 대상 경로에 대상 파일로 푼다.
|
|
/// @param szDestPathName - 대상 경로
|
|
/// @param szDestFileName - 대상 파일명, NULL 이면 원래 파일명 사용
|
|
/// @return
|
|
/// @date 2004-03-06 오후 11:06:59
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BOOL CUnAlz::ExtractCurrentFile(const char* szDestPathName, const char* szDestFileName)
|
|
{
|
|
if(m_posCur==m_fileList.end()/*(FileList::iterator)NULL*/) {ASSERT(0); return FALSE;}
|
|
BOOL ret=FALSE;
|
|
|
|
SExtractDest dest;
|
|
char szDestPathFileName[MAX_PATH];
|
|
|
|
if(chkValidPassword() == FALSE)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
if( szDestPathName==NULL||
|
|
strlen(szDestPathName) + (szDestFileName?strlen(szDestFileName):strlen(m_posCur->fileName))+1 > MAX_PATH
|
|
) // check buffer overflow
|
|
{
|
|
ASSERT(0);
|
|
m_nErr = ERR_GENERAL;
|
|
return FALSE;
|
|
}
|
|
|
|
// 경로명
|
|
safe_strcpy(szDestPathFileName, szDestPathName, MAX_PATH);
|
|
if(szDestPathFileName[strlen(szDestPathFileName)]!=PATHSEPC)
|
|
safe_strcat(szDestPathFileName, PATHSEP, MAX_PATH);
|
|
|
|
// 파일명
|
|
if(szDestFileName) safe_strcat(szDestPathFileName, szDestFileName, MAX_PATH);
|
|
else safe_strcat(szDestPathFileName, m_posCur->fileName, MAX_PATH);
|
|
|
|
// ../../ 형식의 보안 버그 확인
|
|
if( strstr(szDestPathFileName, "../")||
|
|
strstr(szDestPathFileName, "..\\"))
|
|
{
|
|
ASSERT(0);
|
|
m_nErr = ERR_GENERAL;
|
|
return FALSE;
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
{
|
|
char* p = szDestPathFileName; // 경로 delimiter 바꾸기
|
|
while(*p)
|
|
{
|
|
if(*p=='\\') *p='/';
|
|
p++;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// 압축풀 대상 ( 파일 )
|
|
dest.nType = ET_FILE;
|
|
|
|
if(m_bPipeMode)
|
|
dest.fp = stdout; // pipe mode 일 경우 stdout 출력
|
|
else
|
|
dest.fp = fopen(szDestPathFileName, "wb");
|
|
|
|
// 타입이 폴더일 경우..
|
|
if(m_bPipeMode==FALSE && (m_posCur->head.fileAttribute) & ALZ_FILEATTR_DIRECTORY )
|
|
{
|
|
//printf("digpath:%s\n", szDestPathFileName);
|
|
// 경로파기
|
|
DigPath(szDestPathFileName);
|
|
return TRUE;
|
|
// m_nErr = ERR_CANT_CREATE_DEST_PATH;
|
|
// return FALSE;
|
|
}
|
|
|
|
// 파일 열기 실패시 - 경로를 파본다
|
|
if(dest.fp==NULL)
|
|
{
|
|
DigPath(szDestPathFileName);
|
|
dest.fp = fopen(szDestPathFileName, "wb");
|
|
}
|
|
|
|
// 그래도 파일열기 실패시.
|
|
if(dest.fp==NULL)
|
|
{
|
|
// 대상 파일 열기 실패
|
|
m_nErr = ERR_CANT_OPEN_DEST_FILE;
|
|
//printf("dest pathfilename:%s\n",szDestPathFileName);
|
|
if(m_pFuncCallBack)
|
|
{
|
|
// CHAR buf[1024];
|
|
// sprintf(buf, "파일 열기 실패 : %s", szDestPathFileName);
|
|
// m_pFuncCallBack(buf, 0,0,m_pCallbackParam, NULL);
|
|
}
|
|
return FALSE;
|
|
}
|
|
//#endif
|
|
|
|
// CALLBACK 세팅
|
|
if(m_pFuncCallBack) m_pFuncCallBack(m_posCur->fileName, 0,m_posCur->uncompressedSize,m_pCallbackParam, NULL);
|
|
|
|
ret = ExtractTo(&dest);
|
|
if(dest.fp!=NULL)
|
|
{
|
|
fclose(dest.fp);
|
|
// file time setting - from unalz_wcx_01i.zip
|
|
utimbuf tmp;
|
|
tmp.actime = 0; // 마지막 엑세스 타임
|
|
tmp.modtime = dosTime2TimeT(m_posCur->head.fileTimeDate); // 마지막 수정일자만 변경(만든 날자는 어떻게 바꾸지?)
|
|
utime(m_posCur->fileName, &tmp);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 대상에 압축 풀기..
|
|
/// @param dest
|
|
/// @return
|
|
/// @date 2004-03-07 오전 12:44:36
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BOOL CUnAlz::ExtractTo(SExtractDest* dest)
|
|
{
|
|
BOOL ret = FALSE;
|
|
// 압축 방법에 따라서 압축 풀기
|
|
if(m_posCur->compressionMethod==COMP_NOCOMP)
|
|
{
|
|
ret = ExtractRawfile(dest, *m_posCur);
|
|
}
|
|
else if(m_posCur->compressionMethod==COMP_BZIP2)
|
|
{
|
|
ret = ExtractBzip2(dest, *m_posCur); // bzip2
|
|
}
|
|
else if(m_posCur->compressionMethod==COMP_DEFLATE)
|
|
{
|
|
ret = ExtractDeflate2(dest, *m_posCur); // deflate
|
|
}
|
|
else // COMP_UNKNOWN
|
|
{
|
|
// alzip 5.6 부터 추가된 포맷(5.5 에서는 풀지 못한다. 영문 5.51 은 푼다 )
|
|
// 하지만 어떤 버전에서 이 포맷을 만들어 내는지 정확히 알 수 없다.
|
|
// 공식으로 릴리즈된 알집은 이 포맷을 만들어내지 않는다. 비공식(베타?)으로 배포된 버전에서만 이 포맷을 만들어낸다.
|
|
m_nErr = ERR_UNKNOWN_COMPRESSION_METHOD;
|
|
ASSERT(0);
|
|
ret = FALSE;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// DEFLATE 로 풀기 - 테스트용 함수. 모든 파일을 한꺼번에 읽어서 푼다. 실제 사용 안함.
|
|
/// @param fp - 대상 파일
|
|
/// @param file - 소스 파일 정보
|
|
/// @return
|
|
/// @date 2004-03-06 오후 11:09:17
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/*
|
|
BOOL CUnAlz::ExtractDeflate(FILE* fp, SAlzLocalFileHeader& file)
|
|
{
|
|
z_stream stream;
|
|
BYTE* pInBuf=NULL;
|
|
BYTE* pOutBuf=NULL;
|
|
int nInBufSize = file.compressedSize;
|
|
int nOutBufSize = file.uncompressedSize;
|
|
int err;
|
|
int flush=Z_SYNC_FLUSH;
|
|
BOOL ret = FALSE;
|
|
|
|
memset(&stream, 0, sizeof(stream));
|
|
|
|
pInBuf = (BYTE*)malloc(nInBufSize);
|
|
if(pInBuf==NULL)
|
|
{
|
|
m_nErr = ERR_MEM_ALLOC_FAILED;
|
|
goto END;
|
|
}
|
|
|
|
pOutBuf = (BYTE*)malloc(nOutBufSize);
|
|
if(pOutBuf==NULL)
|
|
{
|
|
m_nErr = ERR_MEM_ALLOC_FAILED;
|
|
goto END;
|
|
}
|
|
|
|
// 한번에 읽어서
|
|
fseek(m_fp, file.dwFileDataPos, SEEK_SET);
|
|
if(FRead(pInBuf, nInBufSize, 1, m_fp)!=1)
|
|
{
|
|
m_nErr = ERR_FILE_READ_ERROR;
|
|
goto END;
|
|
}
|
|
|
|
// 초기화..
|
|
inflateInit2(&stream, -MAX_WBITS);
|
|
|
|
stream.next_out = pOutBuf;
|
|
stream.avail_out = nOutBufSize;
|
|
stream.next_in = pInBuf;
|
|
stream.avail_in = nInBufSize;
|
|
|
|
err = inflate(&stream, flush);
|
|
|
|
if(err!=Z_OK && err!=Z_STREAM_END )
|
|
{
|
|
m_nErr = ERR_INFLATE_FAILED;
|
|
goto END;
|
|
}
|
|
|
|
fwrite(pOutBuf, 1, nOutBufSize, fp);
|
|
|
|
ret = TRUE;
|
|
|
|
END :
|
|
inflateEnd(&stream);
|
|
|
|
if(pInBuf) free(pInBuf);
|
|
if(pOutBuf) free(pOutBuf);
|
|
return ret;
|
|
}
|
|
*/
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 대상 폴더에 현재 압축파일을 전부 풀기
|
|
/// @param szDestPathName - 대상 경로
|
|
/// @return
|
|
/// @date 2004-03-06 오후 11:09:49
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BOOL CUnAlz::ExtractAll(const char* szDestPathName)
|
|
{
|
|
FileList::iterator i;
|
|
|
|
for(i=m_fileList.begin(); i<m_fileList.end(); i++)
|
|
{
|
|
m_posCur = i;
|
|
if(ExtractCurrentFile(szDestPathName)==FALSE) return FALSE;
|
|
if(m_bHalt)
|
|
break; // 멈추기..
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 대상 경로 파기 - 압축 파일 내에 폴더 정보가 있을 경우, 다중 폴더를 판다(dig)
|
|
/// @param szPathName
|
|
/// @return
|
|
/// @date 2004-03-06 오후 11:10:12
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BOOL CUnAlz::DigPath(const char* szPathName)
|
|
{
|
|
char* dup = strdup(szPathName);
|
|
char seps[] = "/\\";
|
|
char* token;
|
|
char path[MAX_PATH] = {0};
|
|
char* last;
|
|
|
|
// 경로만 뽑기.
|
|
last = dup + strlen(dup);
|
|
while(last!=dup)
|
|
{
|
|
if(*last=='/' || *last=='\\')
|
|
{
|
|
*last = (char)NULL;
|
|
break;
|
|
}
|
|
last --;
|
|
}
|
|
|
|
|
|
token = strtok( dup, seps );
|
|
while( token != NULL )
|
|
{
|
|
if(strlen(path)==0)
|
|
{
|
|
if(szPathName[0]=='/') // is absolute path ?
|
|
safe_strcpy(path,"/", MAX_PATH);
|
|
else if(szPathName[0]=='\\' && szPathName[1]=='\\') // network drive ?
|
|
safe_strcpy(path,"\\\\", MAX_PATH);
|
|
safe_strcat(path, token, MAX_PATH);
|
|
}
|
|
else
|
|
{
|
|
safe_strcat(path, PATHSEP,MAX_PATH);
|
|
safe_strcat(path, token,MAX_PATH);
|
|
}
|
|
|
|
if(IsFolder(path)==FALSE)
|
|
#ifdef _WIN32
|
|
_mkdir(path);
|
|
#else
|
|
mkdir(path, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
|
|
#endif
|
|
//printf("path:%s\n", path);
|
|
token = strtok( NULL, seps );
|
|
}
|
|
|
|
free(dup);
|
|
if(IsFolder(szPathName)) return TRUE;
|
|
return FALSE;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 제대로된 폴더 인가?
|
|
/// @param szPathName
|
|
/// @return
|
|
/// @date 2004-03-06 오후 11:03:26
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BOOL CUnAlz::IsFolder(const CHAR* szPathName)
|
|
{
|
|
#ifdef _WIN32
|
|
UINT32 dwRet;
|
|
dwRet = GetFileAttributesA(szPathName);
|
|
if(dwRet==0xffffffff) return FALSE;
|
|
if(dwRet & FILE_ATTRIBUTE_DIRECTORY) return TRUE;
|
|
return FALSE;
|
|
#else
|
|
|
|
struct stat buf;
|
|
int result;
|
|
|
|
result = stat(szPathName, &buf);
|
|
if(result!=0) return FALSE;
|
|
//printf("isfolder:%s, %d,%d,%d\n", szPathName, buf.st_mode, S_IFDIR, buf.st_mode & S_IFDIR);
|
|
if(buf.st_mode & S_IFDIR) return TRUE;
|
|
return FALSE;
|
|
#endif
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 압축을 풀 대상에 압축을 푼다.
|
|
/// @param dest - 대상 OBJECT
|
|
/// @param buf - 풀린 데이타
|
|
/// @param nSize - 데이타의 크기
|
|
/// @return 쓴 바이트수. 에러시 -1 리턴
|
|
/// @date 2004-03-07 오전 12:37:41
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
int CUnAlz::WriteToDest(SExtractDest* dest, BYTE* buf, int nSize)
|
|
{
|
|
if(dest->nType==ET_FILE)
|
|
{
|
|
return fwrite(buf, 1, nSize, dest->fp);
|
|
}
|
|
else if(dest->nType==ET_MEM)
|
|
{
|
|
if(dest->buf==NULL) return nSize; // 대상이 NULL 이다... 압축푸는 시늉만 한다..
|
|
if(dest->bufpos+nSize >dest->bufsize) // 에러.. 버퍼가 넘쳤다.
|
|
{
|
|
ASSERT(0);
|
|
return -1;
|
|
}
|
|
// memcpy
|
|
memcpy(dest->buf + dest->bufpos, buf, nSize);
|
|
dest->bufpos += nSize;
|
|
return nSize;
|
|
}
|
|
else
|
|
{
|
|
ASSERT(0);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/* 실패한 방법.. 고생한게 아까워서 못지움.
|
|
#define ALZDLZ_HEADER_SIZE 4 // alz 파일의 bzip2 헤더 크기
|
|
#define BZIP2_HEADER_SIZE 10 // bzip 파일의 헤더 크기
|
|
#define BZIP2_CRC_SIZE 4 // bzip2 의 crc
|
|
#define BZIP2_TAIL_SIZE 10 // 대충 4+5 정도.?
|
|
BYTE bzip2Header[BZIP2_HEADER_SIZE] = {0x42, 0x5a, 0x68, 0x39, 0x31, 0x41, 0x59, 0x26, 0x53, 0x59};
|
|
|
|
BOOL CUnAlz::ExtractBzip2_bak(FILE* fp, SAlzLocalFileHeader& file)
|
|
{
|
|
bz_stream stream;
|
|
BYTE* pInBuf=NULL;
|
|
BYTE* pOutBuf=NULL;
|
|
int nInBufSize = file.compressedSize;
|
|
int nOutBufSize = file.uncompressedSize;
|
|
//int err;
|
|
int flush=Z_SYNC_FLUSH;
|
|
BOOL ret = FALSE;
|
|
UINT32 crc = 0xffffffff;
|
|
|
|
//BYTE temp[100];
|
|
|
|
memset(&stream, 0, sizeof(stream));
|
|
|
|
pInBuf = (BYTE*)malloc(nInBufSize + BZIP2_HEADER_SIZE + BZIP2_CRC_SIZE - ALZDLZ_HEADER_SIZE + BZIP2_TAIL_SIZE);
|
|
if(pInBuf==NULL)
|
|
{
|
|
m_nErr = ERR_MEM_ALLOC_FAILED;
|
|
goto END;
|
|
}
|
|
|
|
pOutBuf = (BYTE*)malloc(nOutBufSize);
|
|
if(pOutBuf==NULL)
|
|
{
|
|
m_nErr = ERR_MEM_ALLOC_FAILED;
|
|
goto END;
|
|
}
|
|
|
|
// ALZ 의 BZIP 헤더 ("DLZ.") 스킵하기.
|
|
fseek(m_fp, ALZDLZ_HEADER_SIZE, SEEK_CUR);
|
|
// BZIP2 헤더 삽입
|
|
memcpy(pInBuf, bzip2Header, BZIP2_HEADER_SIZE);
|
|
// BZIP2 CRC
|
|
memcpy(pInBuf+BZIP2_HEADER_SIZE, &(crc), BZIP2_CRC_SIZE);
|
|
|
|
// 진짜 압축된 데이타를 한번에 읽어서
|
|
fseek(m_fp, file.dwFileDataPos+ALZDLZ_HEADER_SIZE, SEEK_SET);
|
|
if(FRead(pInBuf+BZIP2_HEADER_SIZE+BZIP2_CRC_SIZE, nInBufSize-ALZDLZ_HEADER_SIZE, 1, m_fp)!=1)
|
|
{
|
|
m_nErr = ERR_FILE_READ_ERROR;
|
|
goto END;
|
|
}
|
|
|
|
|
|
// 초기화..
|
|
stream.bzalloc = NULL;
|
|
stream.bzfree = NULL;
|
|
stream.opaque = NULL;
|
|
ret = BZ2_bzDecompressInit ( &stream, 3,0 );
|
|
if (ret != BZ_OK) goto END;
|
|
|
|
|
|
//memcpy(temp, pInBuf, 100);
|
|
|
|
stream.next_in = (char*)pInBuf;
|
|
stream.next_out = (char*)pOutBuf;
|
|
stream.avail_in = nInBufSize+BZIP2_HEADER_SIZE+BZIP2_CRC_SIZE+BZIP2_TAIL_SIZE;
|
|
stream.avail_out = nOutBufSize;
|
|
|
|
|
|
ret = BZ2_bzDecompress ( &stream );
|
|
|
|
// BZ_DATA_ERROR 가 리턴될 수 있다..
|
|
//if (ret == BZ_OK) goto END;
|
|
//if (ret != BZ_STREAM_END) goto END;
|
|
|
|
BZ2_bzDecompressEnd(&stream);
|
|
|
|
fwrite(pOutBuf, 1, nOutBufSize, fp);
|
|
|
|
ret = TRUE;
|
|
|
|
END :
|
|
|
|
if(pInBuf) free(pInBuf);
|
|
if(pOutBuf) free(pOutBuf);
|
|
|
|
if(ret==FALSE) BZ2_bzDecompressEnd(&stream);
|
|
|
|
return ret;
|
|
}
|
|
*/
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// RAW 로 압축된 파일 풀기
|
|
/// @param fp - 대상 파일
|
|
/// @param file - 소스 파일
|
|
/// @return
|
|
/// @date 2004-03-06 오후 11:10:53
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
#define BUF_LEN (4096*2)
|
|
BOOL CUnAlz::ExtractRawfile(SExtractDest* dest, SAlzLocalFileHeader& file)
|
|
{
|
|
BOOL ret = FALSE;
|
|
BYTE buf[BUF_LEN];
|
|
INT64 read;
|
|
INT64 sizeToRead;
|
|
INT64 bufLen = BUF_LEN;
|
|
INT64 nWritten = 0;
|
|
BOOL bHalt = FALSE;
|
|
BOOL bIsEncrypted = IsEncryptedFile(); // 암호걸린 파일인가?
|
|
UINT32 dwCRC32= 0;
|
|
|
|
|
|
|
|
// 위치 잡고.
|
|
FSeek(file.dwFileDataPos);
|
|
|
|
sizeToRead = file.compressedSize; // 읽을 크기.
|
|
|
|
m_nErr = ERR_NOERR;
|
|
while(sizeToRead)
|
|
{
|
|
read = min(sizeToRead, bufLen);
|
|
if(FRead(buf, (int)read)==FALSE)
|
|
{
|
|
break;
|
|
}
|
|
|
|
if(bIsEncrypted)
|
|
DecryptingData((int)read, buf); // xf86
|
|
|
|
dwCRC32 = crc32(dwCRC32, buf, (UINT)(read));
|
|
|
|
WriteToDest(dest, buf, (int)read);
|
|
//fwrite(buf, read, 1, fp);
|
|
sizeToRead -= read;
|
|
|
|
nWritten+=read;
|
|
|
|
// progress callback
|
|
if(m_pFuncCallBack)
|
|
{
|
|
m_pFuncCallBack(NULL, nWritten, file.uncompressedSize, m_pCallbackParam, &bHalt);
|
|
if(bHalt)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
m_bHalt = bHalt;
|
|
|
|
if(m_nErr==ERR_NOERR) // 성공적으로 압축을 풀었다.. CRC 검사하기..
|
|
{
|
|
if(file.fileCRC==dwCRC32)
|
|
{
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
m_nErr = ERR_INVALID_FILE_CRC;
|
|
}
|
|
}
|
|
|
|
|
|
return ret;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// BZIP2 압축 풀기..
|
|
/// @param fp_w - 대상 파일
|
|
/// @param file - 소스 파일 정보
|
|
/// @return
|
|
/// @date 2004-03-01 오전 5:47:36
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
#define BZIP2_EXTRACT_BUF_SIZE 0x2000
|
|
BOOL CUnAlz::ExtractBzip2(SExtractDest* dest, SAlzLocalFileHeader& file)
|
|
{
|
|
BZFILE *bzfp = NULL;
|
|
int smallMode = 0;
|
|
int verbosity = 1;
|
|
int bzerr;
|
|
INT64 len;
|
|
BYTE buff[BZIP2_EXTRACT_BUF_SIZE];
|
|
INT64 nWritten = 0;
|
|
BOOL bHalt = FALSE;
|
|
UINT32 dwCRC32= 0;
|
|
BOOL ret = FALSE;
|
|
|
|
FSeek(file.dwFileDataPos);
|
|
|
|
bzfp = BZ2_bzReadOpen(&bzerr,this,verbosity,smallMode,0,0);
|
|
|
|
if(bzfp==NULL){ASSERT(0); return FALSE;}
|
|
|
|
m_nErr = ERR_NOERR;
|
|
while((len=BZ2_bzread(bzfp,buff,BZIP2_EXTRACT_BUF_SIZE))>0)
|
|
{
|
|
WriteToDest(dest, (BYTE*)buff, (int)len);
|
|
//fwrite(buff,1,len,fp_w);
|
|
|
|
dwCRC32 = crc32(dwCRC32,buff, (UINT)(len));
|
|
|
|
|
|
nWritten+=len;
|
|
|
|
// progress callback
|
|
if(m_pFuncCallBack)
|
|
{
|
|
m_pFuncCallBack(NULL, nWritten, file.uncompressedSize, m_pCallbackParam, &bHalt);
|
|
if(bHalt)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(len<0) // 에러 상황..
|
|
{
|
|
m_nErr = ERR_INFLATE_FAILED;
|
|
}
|
|
|
|
BZ2_bzReadClose( &bzerr, bzfp);
|
|
|
|
m_bHalt = bHalt;
|
|
|
|
if(m_nErr==ERR_NOERR) // 성공적으로 압축을 풀었다.. CRC 검사하기..
|
|
{
|
|
if(file.fileCRC==dwCRC32)
|
|
{
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
m_nErr = ERR_INVALID_FILE_CRC;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
// FILE* 를 사용할경우 사용하던 코드. - 멀티 볼륨 지원 안함..
|
|
BZFILE *bzfp = NULL;
|
|
int smallMode = 0;
|
|
int verbosity = 1;
|
|
int bzerr;
|
|
int len;
|
|
char buff[BZIP2_EXTRACT_BUF_SIZE];
|
|
INT64 nWritten = 0;
|
|
BOOL bHalt = FALSE;
|
|
|
|
FSeek(file.dwFileDataPos, SEEK_SET);
|
|
|
|
bzfp = BZ2_bzReadOpen(&bzerr,m_fp,verbosity,smallMode,0,0);
|
|
|
|
while((len=BZ2_bzread(bzfp,buff,BZIP2_EXTRACT_BUF_SIZE))>0)
|
|
{
|
|
WriteToDest(dest, (BYTE*)buff, len);
|
|
//fwrite(buff,1,len,fp_w);
|
|
|
|
nWritten+=len;
|
|
|
|
// progress callback
|
|
if(m_pFuncCallBack)
|
|
{
|
|
m_pFuncCallBack(NULL, nWritten, file.uncompressedSize, m_pCallbackParam, &bHalt);
|
|
if(bHalt)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
BZ2_bzReadClose( &bzerr, bzfp);
|
|
|
|
m_bHalt = bHalt;
|
|
*/
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
#ifndef UNZ_BUFSIZE
|
|
#define UNZ_BUFSIZE 0x1000 // (16384)
|
|
#endif
|
|
|
|
#define IN_BUF_SIZE UNZ_BUFSIZE
|
|
#define OUT_BUF_SIZE 0x1000 //IN_BUF_SIZE
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// deflate 로 압축 풀기. ExtractDeflate() 와 달리 조금씩 읽어서 푼다.
|
|
/// @param fp
|
|
/// @param file
|
|
/// @return
|
|
/// @date 2004-03-06 오후 11:11:36
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BOOL CUnAlz::ExtractDeflate2(SExtractDest* dest, SAlzLocalFileHeader& file)
|
|
{
|
|
z_stream stream;
|
|
BYTE pInBuf[IN_BUF_SIZE];
|
|
BYTE pOutBuf[OUT_BUF_SIZE];
|
|
int nInBufSize = IN_BUF_SIZE;
|
|
int nOutBufSize = OUT_BUF_SIZE;
|
|
int err;
|
|
int flush=Z_SYNC_FLUSH;
|
|
BOOL ret = FALSE;
|
|
INT64 nRestReadCompressed;
|
|
UINT32 dwCRC32= 0;
|
|
INT64 rest_read_uncompressed;
|
|
UINT iRead = 0;
|
|
INT64 nWritten = 0;
|
|
BOOL bHalt = FALSE;
|
|
BOOL bIsEncrypted = IsEncryptedFile(); // 암호걸린 파일인가?
|
|
|
|
memset(&stream, 0, sizeof(stream));
|
|
|
|
FSeek(file.dwFileDataPos);
|
|
|
|
inflateInit2(&stream, -MAX_WBITS);
|
|
nRestReadCompressed = file.compressedSize;
|
|
rest_read_uncompressed = file.uncompressedSize;
|
|
|
|
// 출력 부분.
|
|
stream.next_out = pOutBuf;
|
|
stream.avail_out = OUT_BUF_SIZE;
|
|
|
|
m_nErr = ERR_NOERR;
|
|
while(stream.avail_out>0)
|
|
{
|
|
if(stream.avail_in==0 && nRestReadCompressed>0)
|
|
{
|
|
UINT uReadThis = UNZ_BUFSIZE;
|
|
if (nRestReadCompressed<(int)uReadThis)
|
|
uReadThis = (UINT)nRestReadCompressed; // 읽을 크기.
|
|
|
|
if (uReadThis == 0)
|
|
break; // 중지
|
|
|
|
if(FRead(pInBuf, uReadThis)==FALSE)
|
|
{
|
|
m_nErr = ERR_CANT_READ_FILE;
|
|
goto END;
|
|
}
|
|
|
|
if(bIsEncrypted)
|
|
DecryptingData(uReadThis, pInBuf); // xf86
|
|
|
|
// dwCRC32 = crc32(dwCRC32,pInBuf, (UINT)(uReadThis));
|
|
|
|
nRestReadCompressed -= uReadThis;
|
|
stream.next_in = pInBuf;
|
|
stream.avail_in = uReadThis;
|
|
}
|
|
|
|
UINT uTotalOutBefore,uTotalOutAfter;
|
|
const BYTE *bufBefore;
|
|
UINT uOutThis;
|
|
int flush=Z_SYNC_FLUSH;
|
|
|
|
uTotalOutBefore = stream.total_out;
|
|
bufBefore = stream.next_out;
|
|
|
|
err=inflate(&stream,flush);
|
|
|
|
uTotalOutAfter = stream.total_out;
|
|
uOutThis = uTotalOutAfter-uTotalOutBefore;
|
|
|
|
dwCRC32 = crc32(dwCRC32,bufBefore, (UINT)(uOutThis));
|
|
|
|
rest_read_uncompressed -= uOutThis;
|
|
|
|
iRead += (UINT)(uTotalOutAfter - uTotalOutBefore);
|
|
|
|
WriteToDest(dest, pOutBuf, uOutThis);
|
|
//fwrite(pOutBuf, uOutThis, 1, fp); // file 에 쓰기.
|
|
stream.next_out = pOutBuf;
|
|
stream.avail_out = OUT_BUF_SIZE;
|
|
|
|
nWritten+=uOutThis;
|
|
|
|
// progress callback
|
|
if(m_pFuncCallBack)
|
|
{
|
|
m_pFuncCallBack(NULL, nWritten, file.uncompressedSize, m_pCallbackParam, &bHalt);
|
|
if(bHalt)
|
|
{
|
|
m_nErr = ERR_USER_ABORTED;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (err==Z_STREAM_END)
|
|
break;
|
|
//if(iRead==0) break; // UNZ_EOF;
|
|
if (err!=Z_OK)
|
|
{
|
|
m_nErr = ERR_INFLATE_FAILED;
|
|
goto END;
|
|
}
|
|
}
|
|
m_bHalt = bHalt;
|
|
|
|
|
|
if(m_nErr==ERR_NOERR) // 성공적으로 압축을 풀었다.. CRC 검사하기..
|
|
{
|
|
if(file.fileCRC==dwCRC32)
|
|
{
|
|
ret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
m_nErr = ERR_INVALID_FILE_CRC;
|
|
}
|
|
}
|
|
|
|
|
|
END :
|
|
inflateEnd(&stream);
|
|
|
|
return ret;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 파일 열기
|
|
/// @param szPathName
|
|
/// @return
|
|
/// @date 2004-10-02 오후 11:47:14
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BOOL CUnAlz::FOpen(const char* szPathName)
|
|
{
|
|
char* temp = strdup(szPathName); // 파일명 복사..
|
|
int i;
|
|
int nLen = strlen(szPathName);
|
|
UINT64 nFileSizeLow;
|
|
UINT32 dwFileSizeHigh;
|
|
m_nFileCount = 0;
|
|
m_nCurFile = 0;
|
|
m_nVirtualFilePos = 0;
|
|
m_nCurFilePos = 0;
|
|
m_bIsEOF = FALSE;
|
|
for(i=0;i<MAX_FILES;i++) // aa.alz 파일명을 가지고 aa.a00 aa.a01 aa.a02 .. 만들기
|
|
{
|
|
if(i>0)
|
|
safe_sprintf(temp+nLen-3, 4, "%c%02d", (i-1)/100+'a', (i-1)%100);
|
|
|
|
#ifdef _WIN32
|
|
m_files[i].fp = CreateFileA(temp, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
|
|
if(m_files[i].fp==INVALID_HANDLE_VALUE) break;
|
|
nFileSizeLow = GetFileSize(m_files[i].fp, (DWORD*)&dwFileSizeHigh);
|
|
#else
|
|
m_files[i].fp = fopen(temp, "rb");
|
|
if(m_files[i].fp==NULL) break;
|
|
dwFileSizeHigh=0;
|
|
unalz_fseek(m_files[i].fp,0,SEEK_END);
|
|
nFileSizeLow=unalz_ftell(m_files[i].fp);
|
|
unalz_fseek(m_files[i].fp,0,SEEK_SET);
|
|
#endif
|
|
m_nFileCount++;
|
|
m_files[i].nFileSize = ((INT64)nFileSizeLow) + (((INT64)dwFileSizeHigh)<<32);
|
|
if(i==0) m_files[i].nMultivolHeaderSize = 0;
|
|
else m_files[i].nMultivolHeaderSize = MULTIVOL_HEAD_SIZE;
|
|
m_files[i].nMultivolTailSize = MULTIVOL_TAIL_SIZE;
|
|
}
|
|
free(temp);
|
|
if(m_nFileCount==0) return FALSE;
|
|
m_files[m_nFileCount-1].nMultivolTailSize = 0; // 마지막 파일은 꼴랑지가 없다..
|
|
return TRUE;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 파일 닫기
|
|
/// @return
|
|
/// @date 2004-10-02 오후 11:48:53
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
void CUnAlz::FClose()
|
|
{
|
|
int i;
|
|
#ifdef _WIN32
|
|
for(i=0;i<m_nFileCount;i++) CloseHandle(m_files[i].fp);
|
|
#else
|
|
for(i=0;i<m_nFileCount;i++) fclose(m_files[i].fp);
|
|
#endif
|
|
memset(m_files, 0, sizeof(m_files));
|
|
m_nFileCount = 0;
|
|
m_nCurFile = -1;
|
|
m_nVirtualFilePos = 0;
|
|
m_nCurFilePos = 0;
|
|
m_bIsEOF = FALSE;
|
|
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 파일의 끝인가?
|
|
/// @return
|
|
/// @date 2004-10-02 오후 11:48:21
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BOOL CUnAlz::FEof()
|
|
{
|
|
return m_bIsEOF;
|
|
/*
|
|
if(m_fp==NULL){ASSERT(0); return TRUE;}
|
|
if(feof(m_fp)) return TRUE;
|
|
return FALSE;
|
|
*/
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 현재 파일 위치
|
|
/// @return
|
|
/// @date 2004-10-02 오후 11:50:50
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
INT64 CUnAlz::FTell()
|
|
{
|
|
return m_nVirtualFilePos; // return ftell(m_fp);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 파일 위치 세팅
|
|
/// @param offset
|
|
/// @param origin
|
|
/// @return
|
|
/// @date 2004-10-02 오후 11:51:53
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BOOL CUnAlz::FSeek(INT64 offset)
|
|
{
|
|
m_nVirtualFilePos = offset;
|
|
int i;
|
|
INT64 remain=offset;
|
|
LONG remainHigh;
|
|
|
|
m_bIsEOF = FALSE;
|
|
|
|
for(i=0;i<m_nFileCount;i++) // 앞에서 루프를 돌면서 위치 선정하기..
|
|
{
|
|
if(remain<=m_files[i].nFileSize-m_files[i].nMultivolHeaderSize-m_files[i].nMultivolTailSize)
|
|
{
|
|
m_nCurFile = i;
|
|
m_nCurFilePos = remain+m_files[i].nMultivolHeaderSize; // 물리적 위치.
|
|
remainHigh = (LONG)((m_nCurFilePos>>32)&0xffffffff);
|
|
#ifdef _WIN32
|
|
SetFilePointer(m_files[i].fp, LONG(m_nCurFilePos), &remainHigh, FILE_BEGIN);
|
|
#else
|
|
unalz_fseek(m_files[i].fp, m_nCurFilePos, SEEK_SET);
|
|
#endif
|
|
return TRUE;
|
|
}
|
|
remain -= (m_files[i].nFileSize-m_files[i].nMultivolHeaderSize-m_files[i].nMultivolTailSize);
|
|
}
|
|
|
|
// 실패..?
|
|
ASSERT(0);
|
|
return FALSE;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 파일 읽기
|
|
/// @param buffer
|
|
/// @param size
|
|
/// @param count
|
|
/// @return
|
|
/// @date 2004-10-02 오후 11:44:05
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BOOL CUnAlz::FRead(void* buffer, UINT32 nBytesToRead, int* pTotRead )
|
|
{
|
|
BOOL ret;
|
|
UINT32 nNumOfBytesRead;
|
|
INT64 dwRemain;
|
|
UINT32 dwRead;
|
|
UINT32 dwTotRead;
|
|
|
|
dwRemain = nBytesToRead;
|
|
dwTotRead = 0;
|
|
if(pTotRead) *pTotRead=0;
|
|
|
|
while(dwRemain)
|
|
{
|
|
dwRead = (UINT32)min(dwRemain, (m_files[m_nCurFile].nFileSize-m_nCurFilePos-m_files[m_nCurFile].nMultivolTailSize));
|
|
if(dwRead==0) {
|
|
m_bIsEOF = TRUE;return FALSE;
|
|
}
|
|
#ifdef _WIN32
|
|
ret = ReadFile(m_files[m_nCurFile].fp, ((BYTE*)buffer)+dwTotRead, dwRead, (DWORD*)&nNumOfBytesRead, NULL);
|
|
if(ret==FALSE && GetLastError()==ERROR_HANDLE_EOF)
|
|
{
|
|
m_bIsEOF = TRUE;return FALSE;
|
|
}
|
|
|
|
#else
|
|
nNumOfBytesRead = fread(((BYTE*)buffer)+dwTotRead, 1,dwRead ,m_files[m_nCurFile].fp);
|
|
if(nNumOfBytesRead<=0)
|
|
{
|
|
m_bIsEOF = TRUE;return FALSE;
|
|
}
|
|
ret=TRUE;
|
|
#endif
|
|
if(dwRead!=nNumOfBytesRead) // 발생하면 안된다..
|
|
{
|
|
ASSERT(0); return FALSE;
|
|
}
|
|
|
|
m_nVirtualFilePos += nNumOfBytesRead; // virtual 파일 위치..
|
|
|
|
m_nCurFilePos+=nNumOfBytesRead; // 물리적 파일 위치.
|
|
dwRemain-=nNumOfBytesRead;
|
|
dwTotRead+=nNumOfBytesRead;
|
|
if(pTotRead) *pTotRead=dwTotRead;
|
|
|
|
if(m_nCurFilePos==m_files[m_nCurFile].nFileSize-m_files[m_nCurFile].nMultivolTailSize) // overflow
|
|
{
|
|
m_nCurFile++;
|
|
|
|
#ifdef _WIN32
|
|
if(m_files[m_nCurFile].fp==INVALID_HANDLE_VALUE)
|
|
#else
|
|
if(m_files[m_nCurFile].fp==NULL)
|
|
#endif
|
|
{
|
|
m_bIsEOF = TRUE;
|
|
if(dwRemain==0) return TRUE; // 완전히 끝까지 읽었다..
|
|
return FALSE;
|
|
}
|
|
|
|
m_nCurFilePos = m_files[m_nCurFile].nMultivolHeaderSize; // header skip
|
|
#ifdef _WIN32
|
|
SetFilePointer(m_files[m_nCurFile].fp, (int)m_nCurFilePos, NULL, FILE_BEGIN);
|
|
#else
|
|
unalz_fseek(m_files[m_nCurFile].fp, m_nCurFilePos, SEEK_SET);
|
|
#endif
|
|
}
|
|
else
|
|
if(m_nCurFilePos>m_files[m_nCurFile].nFileSize-m_files[m_nCurFile].nMultivolTailSize) ASSERT(0);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// error code 를 스트링으로 바꿔 준다.
|
|
/// @param nERR
|
|
/// @return
|
|
/// @date 2004-10-24 오후 3:28:39
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
const char* CUnAlz::LastErrToStr(ERR nERR)
|
|
{
|
|
if(nERR>= sizeof(errorstrtable)/sizeof(errorstrtable[0])) {ASSERT(0); return NULL; }
|
|
return errorstrtable[nERR];
|
|
}
|
|
|
|
|
|
// by xf86
|
|
BOOL CUnAlz::chkValidPassword()
|
|
{
|
|
if(IsEncryptedFile()==FALSE) {return TRUE;}
|
|
|
|
if (getPasswordLen() == 0){
|
|
m_nErr = ERR_PASSWD_NOT_SET;
|
|
return FALSE;
|
|
}
|
|
InitCryptKeys(m_szPasswd);
|
|
if(CryptCheck(m_posCur->encChk) == FALSE){
|
|
m_nErr = ERR_INVALID_PASSWD;
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// from CZipArchive
|
|
// Copyright (C) 2000 - 2004 Tadeusz Dracz
|
|
//
|
|
// http://www.artpol-software.com
|
|
//
|
|
// it's under GPL.
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
void CUnAlz::CryptDecodeBuffer(UINT32 uCount, CHAR *buf)
|
|
{
|
|
if (IsEncrypted())
|
|
for (UINT32 i = 0; i < uCount; i++)
|
|
CryptDecode(buf[i]);
|
|
}
|
|
|
|
void CUnAlz::CryptInitKeys()
|
|
{
|
|
m_keys[0] = 305419896L;
|
|
m_keys[1] = 591751049L;
|
|
m_keys[2] = 878082192L;
|
|
for (int i = 0; i < strlen(m_szPasswd); i++)
|
|
CryptUpdateKeys(m_szPasswd[i]);
|
|
}
|
|
|
|
void CUnAlz::CryptUpdateKeys(CHAR c)
|
|
{
|
|
|
|
m_keys[0] = CryptCRC32(m_keys[0], c);
|
|
m_keys[1] += m_keys[0] & 0xff;
|
|
m_keys[1] = m_keys[1] * 134775813L + 1;
|
|
c = CHAR(m_keys[1] >> 24);
|
|
m_keys[2] = CryptCRC32(m_keys[2], c);
|
|
}
|
|
|
|
BOOL CUnAlz::CryptCheck(CHAR *buf)
|
|
{
|
|
CHAR b = 0;
|
|
for (int i = 0; i < ALZ_ENCR_HEADER_LEN; i++)
|
|
{
|
|
b = buf[i];
|
|
CryptDecode((CHAR&)b);
|
|
}
|
|
|
|
if (IsDataDescr()) // Data descriptor present
|
|
return CHAR(m_posCur->head.fileTimeDate >> 8) == b;
|
|
else
|
|
return CHAR(m_posCur->maybeCRC >> 24) == b;
|
|
}
|
|
|
|
CHAR CUnAlz::CryptDecryptCHAR()
|
|
{
|
|
int temp = (m_keys[2] & 0xffff) | 2;
|
|
return (CHAR)(((temp * (temp ^ 1)) >> 8) & 0xff);
|
|
}
|
|
|
|
void CUnAlz::CryptDecode(CHAR &c)
|
|
{
|
|
c ^= CryptDecryptCHAR();
|
|
CryptUpdateKeys(c);
|
|
}
|
|
|
|
UINT32 CUnAlz::CryptCRC32(UINT32 l, CHAR c)
|
|
{
|
|
const ULONG *CRC_TABLE = get_crc_table();
|
|
return CRC_TABLE[(l ^ c) & 0xff] ^ (l >> 8);
|
|
}
|
|
*/
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 암호걸린 파일인지 여부
|
|
/// @param fileDescriptor
|
|
/// @return
|
|
/// @date 2004-11-27 오후 11:25:32
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BOOL CUnAlz::IsEncryptedFile(BYTE fileDescriptor)
|
|
{
|
|
return fileDescriptor&0x01;
|
|
}
|
|
BOOL CUnAlz::IsEncryptedFile()
|
|
{
|
|
return m_posCur->head.fileDescriptor&0x01;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 암호로 키 초기화
|
|
/// @param szPassword
|
|
/// @return
|
|
/// @date 2004-11-27 오후 11:04:01
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
void CUnAlz::InitCryptKeys(const CHAR* szPassword)
|
|
{
|
|
m_key[0] = 305419896;
|
|
m_key[1] = 591751049;
|
|
m_key[2] = 878082192;
|
|
|
|
int i;
|
|
for(i=0;i<(int)strlen(szPassword);i++)
|
|
{
|
|
UpdateKeys(szPassword[i]);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 데이타로 키 업데이트하기
|
|
/// @param c
|
|
/// @return
|
|
/// @date 2004-11-27 오후 11:04:09
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
void CUnAlz::UpdateKeys(BYTE c)
|
|
{
|
|
m_key[0] = CRC32(m_key[0], c);
|
|
m_key[1] = m_key[1]+(m_key[0]&0x000000ff);
|
|
m_key[1] = m_key[1]*134775813+1;
|
|
m_key[2] = CRC32(m_key[2],m_key[1]>>24);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 암호가 맞는지 헤더 체크하기
|
|
/// @param buf
|
|
/// @return
|
|
/// @date 2004-11-27 오후 11:04:24
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BOOL CUnAlz::CryptCheck(const BYTE* buf)
|
|
{
|
|
int i;
|
|
BYTE c;
|
|
BYTE temp[ALZ_ENCR_HEADER_LEN];
|
|
|
|
memcpy(temp, buf, ALZ_ENCR_HEADER_LEN); // 임시 복사.
|
|
|
|
for(i=0;i<ALZ_ENCR_HEADER_LEN;i++)
|
|
{
|
|
c = temp[i] ^ DecryptByte();
|
|
UpdateKeys(c);
|
|
temp[i] = c;
|
|
}
|
|
|
|
if (IsDataDescr()) // Data descriptor present
|
|
return (m_posCur->head.fileTimeDate >> 8) == c;
|
|
else
|
|
return ( ((m_posCur->fileCRC)>>24) ) == c; // 파일 crc 의 최상위 byte
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 키에서 데이타 추출
|
|
/// @return
|
|
/// @date 2004-11-27 오후 11:05:36
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
BYTE CUnAlz::DecryptByte()
|
|
{
|
|
UINT16 temp;
|
|
temp = m_key[2] | 2;
|
|
return (temp * (temp^1))>>8;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 데이타 압축 풀기
|
|
/// @param nSize
|
|
/// @param data
|
|
/// @return
|
|
/// @date 2004-11-27 오후 11:03:30
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
void CUnAlz::DecryptingData(int nSize, BYTE* data)
|
|
{
|
|
BYTE* p = data;
|
|
BYTE temp;
|
|
|
|
while(nSize)
|
|
{
|
|
temp = *p ^ DecryptByte();
|
|
UpdateKeys(temp);
|
|
*p = temp;
|
|
nSize--;
|
|
p++;
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// CRC 테이블 참조
|
|
/// @param l
|
|
/// @param c
|
|
/// @return
|
|
/// @date 2004-11-27 오후 11:14:16
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
UINT32 CUnAlz::CRC32(UINT32 l, BYTE c)
|
|
{
|
|
const unsigned long *CRC_TABLE = get_crc_table();
|
|
return CRC_TABLE[(l ^ c) & 0xff] ^ (l >> 8);
|
|
}
|
|
|
|
void CUnAlz::SetPassword(char *passwd)
|
|
{
|
|
if(strlen(passwd) == 0) return;
|
|
safe_strcpy(m_szPasswd, passwd, UNALZ_LEN_PASSWORD);
|
|
}
|
|
|
|
#ifdef _UNALZ_ICONV
|
|
void CUnAlz::SetDestCodepage(const char* szToCodepage)
|
|
{
|
|
safe_strcpy(m_szToCodepage, szToCodepage, UNALZ_LEN_CODEPAGE);
|
|
}
|
|
#endif
|
|
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// 문자열 처리 함수들
|
|
/// @param l
|
|
/// @param c
|
|
/// @return
|
|
/// @date 2007-02
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
unsigned int CUnAlz::_strlcpy (char *dest, const char *src, unsigned int size)
|
|
{
|
|
register unsigned int i = 0;
|
|
if (size > 0) {
|
|
size--;
|
|
for (i=0; size > 0 && src[i] != '\0'; ++i, size--)
|
|
dest[i] = src[i];
|
|
dest[i] = '\0';
|
|
}
|
|
while (src[i++]);
|
|
return i;
|
|
}
|
|
unsigned int CUnAlz::_strlcat (char *dest, const char *src, unsigned int size)
|
|
{
|
|
register char *d = dest;
|
|
for (; size > 0 && *d != '\0'; size--, d++);
|
|
return (d - dest) + _strlcpy(d, src, size);
|
|
}
|
|
|
|
// 안전한 strcpy
|
|
void CUnAlz::safe_strcpy(char* dst, const char* src, size_t dst_size)
|
|
{
|
|
#ifdef _WIN32
|
|
lstrcpynA(dst, src, dst_size);
|
|
#else
|
|
_strlcpy(dst, src, dst_size);
|
|
#endif
|
|
}
|
|
|
|
void CUnAlz::safe_strcat(char* dst, const char* src, size_t dst_size)
|
|
{
|
|
#ifdef _WIN32
|
|
StringCchCatExA(dst, dst_size, src, NULL, NULL, STRSAFE_FILL_BEHIND_NULL);
|
|
//lstrcatA(dst, src); // not safe!!
|
|
#else
|
|
_strlcat(dst, src, dst_size);
|
|
#endif
|
|
}
|
|
|