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| -rw-r--r-- | include/iprt/zip.h | 467 |
1 files changed, 467 insertions, 0 deletions
diff --git a/include/iprt/zip.h b/include/iprt/zip.h new file mode 100644 index 00000000..f693ec28 --- /dev/null +++ b/include/iprt/zip.h @@ -0,0 +1,467 @@ +/** @file + * IPRT - Compression. + */ + +/* + * Copyright (C) 2006-2019 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + */ + +#ifndef IPRT_INCLUDED_zip_h +#define IPRT_INCLUDED_zip_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/cdefs.h> +#include <iprt/types.h> + +RT_C_DECLS_BEGIN + +/** @defgroup grp_rt_zip RTZip - Compression + * @ingroup grp_rt + * @{ + */ + + + +/** + * Callback function for consuming compressed data during compression. + * + * @returns iprt status code. + * @param pvUser User argument. + * @param pvBuf Compressed data. + * @param cbBuf Size of the compressed data. + */ +typedef DECLCALLBACK(int) FNRTZIPOUT(void *pvUser, const void *pvBuf, size_t cbBuf); +/** Pointer to FNRTZIPOUT() function. */ +typedef FNRTZIPOUT *PFNRTZIPOUT; + +/** + * Callback function for supplying compressed data during decompression. + * + * @returns iprt status code. + * @param pvUser User argument. + * @param pvBuf Where to store the compressed data. + * @param cbBuf Size of the buffer. + * @param pcbBuf Number of bytes actually stored in the buffer. + */ +typedef DECLCALLBACK(int) FNRTZIPIN(void *pvUser, void *pvBuf, size_t cbBuf, size_t *pcbBuf); +/** Pointer to FNRTZIPIN() function. */ +typedef FNRTZIPIN *PFNRTZIPIN; + +/** + * Compression type. + * (Be careful with these they are stored in files!) + */ +typedef enum RTZIPTYPE +{ + /** Invalid. */ + RTZIPTYPE_INVALID = 0, + /** Choose best fitting one. */ + RTZIPTYPE_AUTO, + /** Store the data. */ + RTZIPTYPE_STORE, + /** Zlib compression the data. */ + RTZIPTYPE_ZLIB, + /** BZlib compress. */ + RTZIPTYPE_BZLIB, + /** libLZF compress. */ + RTZIPTYPE_LZF, + /** Lempel-Ziv-Jeff-Bonwick compression. */ + RTZIPTYPE_LZJB, + /** Lempel-Ziv-Oberhumer compression. */ + RTZIPTYPE_LZO, + /* Zlib compression the data without zlib header. */ + RTZIPTYPE_ZLIB_NO_HEADER, + /** End of valid the valid compression types. */ + RTZIPTYPE_END +} RTZIPTYPE; + +/** + * Compression level. + */ +typedef enum RTZIPLEVEL +{ + /** Store, don't compress. */ + RTZIPLEVEL_STORE = 0, + /** Fast compression. */ + RTZIPLEVEL_FAST, + /** Default compression. */ + RTZIPLEVEL_DEFAULT, + /** Maximal compression. */ + RTZIPLEVEL_MAX +} RTZIPLEVEL; + + +/** + * Create a stream compressor instance. + * + * @returns iprt status code. + * @param ppZip Where to store the instance handle. + * @param pvUser User argument which will be passed on to pfnOut and pfnIn. + * @param pfnOut Callback for consuming output of compression. + * @param enmType Type of compressor to create. + * @param enmLevel Compression level. + */ +RTDECL(int) RTZipCompCreate(PRTZIPCOMP *ppZip, void *pvUser, PFNRTZIPOUT pfnOut, RTZIPTYPE enmType, RTZIPLEVEL enmLevel); + +/** + * Compresses a chunk of memory. + * + * @returns iprt status code. + * @param pZip The compressor instance. + * @param pvBuf Pointer to buffer containing the bits to compress. + * @param cbBuf Number of bytes to compress. + */ +RTDECL(int) RTZipCompress(PRTZIPCOMP pZip, const void *pvBuf, size_t cbBuf); + +/** + * Finishes the compression. + * This will flush all data and terminate the compression data stream. + * + * @returns iprt status code. + * @param pZip The stream compressor instance. + */ +RTDECL(int) RTZipCompFinish(PRTZIPCOMP pZip); + +/** + * Destroys the stream compressor instance. + * + * @returns iprt status code. + * @param pZip The compressor instance. + */ +RTDECL(int) RTZipCompDestroy(PRTZIPCOMP pZip); + + +/** + * Create a stream decompressor instance. + * + * @returns iprt status code. + * @param ppZip Where to store the instance handle. + * @param pvUser User argument which will be passed on to pfnOut and pfnIn. + * @param pfnIn Callback for producing input for decompression. + */ +RTDECL(int) RTZipDecompCreate(PRTZIPDECOMP *ppZip, void *pvUser, PFNRTZIPIN pfnIn); + +/** + * Decompresses a chunk of memory. + * + * @returns iprt status code. + * @param pZip The stream decompressor instance. + * @param pvBuf Where to store the decompressed data. + * @param cbBuf Number of bytes to produce. If pcbWritten is set + * any number of bytes up to cbBuf might be returned. + * @param pcbWritten Number of bytes actually written to the buffer. If NULL + * cbBuf number of bytes must be written. + */ +RTDECL(int) RTZipDecompress(PRTZIPDECOMP pZip, void *pvBuf, size_t cbBuf, size_t *pcbWritten); + +/** + * Destroys the stream decompressor instance. + * + * @returns iprt status code. + * @param pZip The decompressor instance. + */ +RTDECL(int) RTZipDecompDestroy(PRTZIPDECOMP pZip); + + +/** + * Compress a chunk of memory into a block. + * + * @returns IPRT status code. + * + * @param enmType The compression type. + * @param enmLevel The compression level. + * @param fFlags Flags reserved for future extensions, MBZ. + * @param pvSrc Pointer to the input block. + * @param cbSrc Size of the input block. + * @param pvDst Pointer to the output buffer. + * @param cbDst The size of the output buffer. + * @param pcbDstActual Where to return the compressed size. + */ +RTDECL(int) RTZipBlockCompress(RTZIPTYPE enmType, RTZIPLEVEL enmLevel, uint32_t fFlags, + void const *pvSrc, size_t cbSrc, + void *pvDst, size_t cbDst, size_t *pcbDstActual) RT_NO_THROW_PROTO; + + +/** + * Decompress a block. + * + * @returns IPRT status code. + * + * @param enmType The compression type. + * @param fFlags Flags reserved for future extensions, MBZ. + * @param pvSrc Pointer to the input block. + * @param cbSrc Size of the input block. + * @param pcbSrcActual Where to return the compressed size. + * @param pvDst Pointer to the output buffer. + * @param cbDst The size of the output buffer. + * @param pcbDstActual Where to return the decompressed size. + */ +RTDECL(int) RTZipBlockDecompress(RTZIPTYPE enmType, uint32_t fFlags, + void const *pvSrc, size_t cbSrc, size_t *pcbSrcActual, + void *pvDst, size_t cbDst, size_t *pcbDstActual) RT_NO_THROW_PROTO; + + +/** + * Opens a gzip decompression I/O stream. + * + * @returns IPRT status code. + * + * @param hVfsIosIn The compressed input stream (must be readable). + * The reference is not consumed, instead another + * one is retained. + * @param fFlags Flags, MBZ. + * @param phVfsIosGunzip Where to return the handle to the gunzipped I/O + * stream (read). + */ +RTDECL(int) RTZipGzipDecompressIoStream(RTVFSIOSTREAM hVfsIosIn, uint32_t fFlags, PRTVFSIOSTREAM phVfsIosGunzip); + +/** @name RTZipGzipDecompressIoStream flags. + * @{ */ +/** Allow the smaller ZLIB header as well as the regular GZIP header. */ +#define RTZIPGZIPDECOMP_F_ALLOW_ZLIB_HDR RT_BIT(0) +/** @} */ + + +/** + * Opens a gzip decompression I/O stream. + * + * @returns IPRT status code. + * + * @param hVfsIosDst The compressed output stream (must be writable). + * The reference is not consumed, instead another + * one is retained. + * @param fFlags Flags, MBZ. + * @param uLevel The gzip compression level, 1 thru 9. + * @param phVfsIosGzip Where to return the gzip input I/O stream handle + * (you write to this). + */ +RTDECL(int) RTZipGzipCompressIoStream(RTVFSIOSTREAM hVfsIosDst, uint32_t fFlags, uint8_t uLevel, PRTVFSIOSTREAM phVfsIosGzip); + +/** + * A mini GZIP program. + * + * @returns Program exit code. + * + * @param cArgs The number of arguments. + * @param papszArgs The argument vector. (Note that this may be + * reordered, so the memory must be writable.) + */ +RTDECL(RTEXITCODE) RTZipGzipCmd(unsigned cArgs, char **papszArgs); + +/** + * Opens a TAR filesystem stream. + * + * This is used to extract, list or check a TAR archive. + * + * @returns IPRT status code. + * + * @param hVfsIosIn The input stream. The reference is not + * consumed, instead another one is retained. + * @param fFlags Flags, MBZ. + * @param phVfsFss Where to return the handle to the TAR + * filesystem stream. + */ +RTDECL(int) RTZipTarFsStreamFromIoStream(RTVFSIOSTREAM hVfsIosIn, uint32_t fFlags, PRTVFSFSSTREAM phVfsFss); + +/** TAR format type. */ +typedef enum RTZIPTARFORMAT +{ + /** Customary invalid zero value. */ + RTZIPTARFORMAT_INVALID = 0, + /** Default format (GNU). */ + RTZIPTARFORMAT_DEFAULT, + /** The GNU format. */ + RTZIPTARFORMAT_GNU, + /** USTAR format from POSIX.1-1988. */ + RTZIPTARFORMAT_USTAR, + /** PAX format from POSIX.1-2001. */ + RTZIPTARFORMAT_PAX, + /** End of valid formats. */ + RTZIPTARFORMAT_END, + /** Make sure the type is at least 32 bits wide. */ + RTZIPTARFORMAT_32BIT_HACK = 0x7fffffff +} RTZIPTARFORMAT; + +/** + * Opens a TAR filesystem stream for the purpose of create a new TAR archive. + * + * @returns IPRT status code. + * + * @param hVfsIosOut The output stream, i.e. where the tar stuff is + * written. The reference is not consumed, instead + * another one is retained. + * @param enmFormat The desired output format. + * @param fFlags RTZIPTAR_C_XXX. + * @param phVfsFss Where to return the handle to the TAR + * filesystem stream. + */ +RTDECL(int) RTZipTarFsStreamToIoStream(RTVFSIOSTREAM hVfsIosOut, RTZIPTARFORMAT enmFormat, + uint32_t fFlags, PRTVFSFSSTREAM phVfsFss); + +/** @name RTZIPTAR_C_XXX - TAR creation flags (RTZipTarFsStreamToIoStream). + * @{ */ +/** Check for sparse files. + * @note Only supported when adding file objects. The files will be read + * twice. */ +#define RTZIPTAR_C_SPARSE RT_BIT_32(0) +/** Valid bits. */ +#define RTZIPTAR_C_VALID_MASK UINT32_C(0x00000001) +/** @} */ + +/** + * Set the owner to store the archive entries with. + * + * @returns IPRT status code. + * @param hVfsFss The handle to a TAR creator. + * @param uid The UID value to set. Passing NIL_RTUID makes + * it use the value found in RTFSOBJINFO. + * @param pszOwner The owner name to store. Passing NULL makes it + * use the value found in RTFSOBJINFO. + */ +RTDECL(int) RTZipTarFsStreamSetOwner(RTVFSFSSTREAM hVfsFss, RTUID uid, const char *pszOwner); + +/** + * Set the group to store the archive entries with. + * + * @returns IPRT status code. + * @param hVfsFss The handle to a TAR creator. + * @param gid The GID value to set. Passing NIL_RTUID makes + * it use the value found in RTFSOBJINFO. + * @param pszGroup The group name to store. Passing NULL makes it + * use the value found in RTFSOBJINFO. + */ +RTDECL(int) RTZipTarFsStreamSetGroup(RTVFSFSSTREAM hVfsFss, RTGID gid, const char *pszGroup); + +/** + * Set path prefix to store the archive entries with. + * + * @returns IPRT status code. + * @param hVfsFss The handle to a TAR creator. + * @param pszPrefix The path prefix to join the names with. Pass + * NULL for no prefix. + */ +RTDECL(int) RTZipTarFsStreamSetPrefix(RTVFSFSSTREAM hVfsFss, const char *pszPrefix); + +/** + * Set the AND and OR masks to apply to file (non-dir) modes in the archive. + * + * @returns IPRT status code. + * @param hVfsFss The handle to a TAR creator. + * @param fAndMode The bits to keep + * @param fOrMode The bits to set. + */ +RTDECL(int) RTZipTarFsStreamSetFileMode(RTVFSFSSTREAM hVfsFss, RTFMODE fAndMode, RTFMODE fOrMode); + +/** + * Set the AND and OR masks to apply to directory modes in the archive. + * + * @returns IPRT status code. + * @param hVfsFss The handle to a TAR creator. + * @param fAndMode The bits to keep + * @param fOrMode The bits to set. + */ +RTDECL(int) RTZipTarFsStreamSetDirMode(RTVFSFSSTREAM hVfsFss, RTFMODE fAndMode, RTFMODE fOrMode); + +/** + * Set the modification time to store the archive entires with. + * + * @returns IPRT status code. + * @param hVfsFss The handle to a TAR creator. + * @param pModificationTime The modification time to use. Pass NULL to use + * the value found in RTFSOBJINFO. + */ +RTDECL(int) RTZipTarFsStreamSetMTime(RTVFSFSSTREAM hVfsFss, PCRTTIMESPEC pModificationTime); + + +/** + * A mini TAR program. + * + * @returns Program exit code. + * + * @param cArgs The number of arguments. + * @param papszArgs The argument vector. (Note that this may be + * reordered, so the memory must be writable.) + */ +RTDECL(RTEXITCODE) RTZipTarCmd(unsigned cArgs, char **papszArgs); + +/** + * Opens a ZIP filesystem stream. + * + * This is used to extract, list or check a ZIP archive. + * + * @returns IPRT status code. + * + * @param hVfsIosIn The compressed input stream. The reference is + * not consumed, instead another one is retained. + * @param fFlags Flags, MBZ. + * @param phVfsFss Where to return the handle to the TAR + * filesystem stream. + */ +RTDECL(int) RTZipPkzipFsStreamFromIoStream(RTVFSIOSTREAM hVfsIosIn, uint32_t fFlags, PRTVFSFSSTREAM phVfsFss); + +/** + * A mini UNZIP program. + * + * @returns Program exit code. + * @ + * @param cArgs The number of arguments. + * @param papszArgs The argument vector. (Note that this may be + * reordered, so the memory must be writable.) + */ +RTDECL(RTEXITCODE) RTZipUnzipCmd(unsigned cArgs, char **papszArgs); + +/** + * Helper for decompressing files of a ZIP file located in memory. + * + * @returns IPRT status code. + * + * @param ppvDst Where to store the pointer to the allocated + * buffer. To be freed with RTMemFree(). + * @param pcbDst Where to store the pointer to the size of the + * allocated buffer. + * @param pvSrc Pointer to the buffer containing the .zip file. + * @param cbSrc Size of the buffer containing the .zip file. + * @param pszObject Name of the object to extract. + */ +RTDECL(int) RTZipPkzipMemDecompress(void **ppvDst, size_t *pcbDst, const void *pvSrc, size_t cbSrc, const char *pszObject); + +/** + * Opens a XAR filesystem stream. + * + * This is used to extract, list or check a XAR archive. + * + * @returns IPRT status code. + * + * @param hVfsIosIn The compressed input stream. The reference is + * not consumed, instead another one is retained. + * @param fFlags Flags, MBZ. + * @param phVfsFss Where to return the handle to the XAR filesystem + * stream. + */ +RTDECL(int) RTZipXarFsStreamFromIoStream(RTVFSIOSTREAM hVfsIosIn, uint32_t fFlags, PRTVFSFSSTREAM phVfsFss); + +/** @} */ + +RT_C_DECLS_END + +#endif /* !IPRT_INCLUDED_zip_h */ + |