/* zip.c -- IO on .zip files using zlib Version 1.1, February 14h, 2010 part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html ) Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html ) Modifications for Zip64 support Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) For more info read MiniZip_info.txt Changes Oct-2009 - Mathias Svensson - Remove old C style function prototypes Oct-2009 - Mathias Svensson - Added Zip64 Support when creating new file archives Oct-2009 - Mathias Svensson - Did some code cleanup and refactoring to get better overview of some functions. Oct-2009 - Mathias Svensson - Added zipRemoveExtraInfoBlock to strip extra field data from its ZIP64 data It is used when recreating zip archive with RAW when deleting items from a zip. ZIP64 data is automatically added to items that needs it, and existing ZIP64 data need to be removed. Oct-2009 - Mathias Svensson - Added support for BZIP2 as compression mode (bzip2 lib is required) Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility layer */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdint.h> #include <time.h> #include "zlib.h" #include "zip.h" #ifdef STDC # include <stddef.h> #endif #ifdef NO_ERRNO_H extern int errno; #else # include <errno.h> #endif #ifndef local #define local … #endif /* compile with -Dlocal if your debugger can't find static symbols */ #ifndef VERSIONMADEBY #define VERSIONMADEBY … #endif #ifndef Z_BUFSIZE #define Z_BUFSIZE … #endif #ifndef Z_MAXFILENAMEINZIP #define Z_MAXFILENAMEINZIP … #endif #ifndef ALLOC #define ALLOC(size) … #endif /* #define SIZECENTRALDIRITEM (0x2e) #define SIZEZIPLOCALHEADER (0x1e) */ /* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */ // NOT sure that this work on ALL platform #define MAKEULONG64(a, b) … #ifndef SEEK_CUR #define SEEK_CUR … #endif #ifndef SEEK_END #define SEEK_END … #endif #ifndef SEEK_SET #define SEEK_SET … #endif #ifndef DEF_MEM_LEVEL #if MAX_MEM_LEVEL >= 8 #define DEF_MEM_LEVEL … #else #define DEF_MEM_LEVEL … #endif #endif const char zip_copyright[] = …; #define SIZEDATA_INDATABLOCK … #define LOCALHEADERMAGIC … #define CENTRALHEADERMAGIC … #define ENDHEADERMAGIC … #define ZIP64ENDHEADERMAGIC … #define ZIP64ENDLOCHEADERMAGIC … #define FLAG_LOCALHEADER_OFFSET … #define CRC_LOCALHEADER_OFFSET … #define SIZECENTRALHEADER … linkedlist_datablock_internal; linkedlist_data; curfile64_info; zip64_internal; #ifndef NOCRYPT #define INCLUDECRYPTINGCODE_IFCRYPTALLOWED #include "crypt.h" #endif local linkedlist_datablock_internal* allocate_new_datablock(void) { … } local void free_datablock(linkedlist_datablock_internal* ldi) { … } local void init_linkedlist(linkedlist_data* ll) { … } local void free_linkedlist(linkedlist_data* ll) { … } local int add_data_in_datablock(linkedlist_data* ll, const void* buf, uLong len) { … } /****************************************************************************/ #ifndef NO_ADDFILEINEXISTINGZIP /* =========================================================================== Inputs a long in LSB order to the given file nbByte == 1, 2 ,4 or 8 (byte, short or long, ZPOS64_T) */ local int zip64local_putValue(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T x, int nbByte) { … } local void zip64local_putValue_inmemory (void* dest, ZPOS64_T x, int nbByte) { … } /****************************************************************************/ local uLong zip64local_TmzDateToDosDate(const tm_zip* ptm) { … } /****************************************************************************/ local int zip64local_getByte(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, int* pi) { … } /* =========================================================================== Reads a long in LSB order from the given gz_stream. Sets */ local int zip64local_getShort(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong* pX) { … } local int zip64local_getLong(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong* pX) { … } local int zip64local_getLong64(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T *pX) { … } #ifndef BUFREADCOMMENT #define BUFREADCOMMENT … #endif /* Locate the Central directory of a zipfile (at the end, just before the global comment) */ local ZPOS64_T zip64local_SearchCentralDir(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) { … } /* Locate the End of Zip64 Central directory locator and from there find the CD of a zipfile (at the end, just before the global comment) */ local ZPOS64_T zip64local_SearchCentralDir64(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) { … } local int LoadCentralDirectoryRecord(zip64_internal* pziinit) { … } #endif /* !NO_ADDFILEINEXISTINGZIP*/ /************************************************************/ extern zipFile ZEXPORT zipOpen3(const void *pathname, int append, zipcharpc* globalcomment, zlib_filefunc64_32_def* pzlib_filefunc64_32_def) { … } extern zipFile ZEXPORT zipOpen2(const char *pathname, int append, zipcharpc* globalcomment, zlib_filefunc_def* pzlib_filefunc32_def) { … } extern zipFile ZEXPORT zipOpen2_64(const void *pathname, int append, zipcharpc* globalcomment, zlib_filefunc64_def* pzlib_filefunc_def) { … } extern zipFile ZEXPORT zipOpen(const char* pathname, int append) { … } extern zipFile ZEXPORT zipOpen64(const void* pathname, int append) { … } local int Write_LocalFileHeader(zip64_internal* zi, const char* filename, uInt size_extrafield_local, const void* extrafield_local) { … } /* NOTE. When writing RAW the ZIP64 extended information in extrafield_local and extrafield_global needs to be stripped before calling this function it can be done with zipRemoveExtraInfoBlock It is not done here because then we need to realloc a new buffer since parameters are 'const' and I want to minimize unnecessary allocations. */ extern int ZEXPORT zipOpenNewFileInZip4_64(zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int windowBits,int memLevel, int strategy, const char* password, uLong crcForCrypting, uLong versionMadeBy, uLong flagBase, int zip64) { … } extern int ZEXPORT zipOpenNewFileInZip4(zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int windowBits,int memLevel, int strategy, const char* password, uLong crcForCrypting, uLong versionMadeBy, uLong flagBase) { … } extern int ZEXPORT zipOpenNewFileInZip3(zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int windowBits,int memLevel, int strategy, const char* password, uLong crcForCrypting) { … } extern int ZEXPORT zipOpenNewFileInZip3_64(zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int windowBits,int memLevel, int strategy, const char* password, uLong crcForCrypting, int zip64) { … } extern int ZEXPORT zipOpenNewFileInZip2(zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw) { … } extern int ZEXPORT zipOpenNewFileInZip2_64(zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int zip64) { … } extern int ZEXPORT zipOpenNewFileInZip64(zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void*extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int zip64) { … } extern int ZEXPORT zipOpenNewFileInZip(zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void*extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level) { … } local int zip64FlushWriteBuffer(zip64_internal* zi) { … } extern int ZEXPORT zipWriteInFileInZip(zipFile file, const void* buf, unsigned int len) { … } extern int ZEXPORT zipCloseFileInZipRaw(zipFile file, uLong uncompressed_size, uLong crc32) { … } extern int ZEXPORT zipCloseFileInZipRaw64(zipFile file, ZPOS64_T uncompressed_size, uLong crc32) { … } extern int ZEXPORT zipCloseFileInZip(zipFile file) { … } local int Write_Zip64EndOfCentralDirectoryLocator(zip64_internal* zi, ZPOS64_T zip64eocd_pos_inzip) { … } local int Write_Zip64EndOfCentralDirectoryRecord(zip64_internal* zi, uLong size_centraldir, ZPOS64_T centraldir_pos_inzip) { … } local int Write_EndOfCentralDirectoryRecord(zip64_internal* zi, uLong size_centraldir, ZPOS64_T centraldir_pos_inzip) { … } local int Write_GlobalComment(zip64_internal* zi, const char* global_comment) { … } extern int ZEXPORT zipClose(zipFile file, const char* global_comment) { … } extern int ZEXPORT zipRemoveExtraInfoBlock(char* pData, int* dataLen, short sHeader) { … }
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